Sony E 35mm
size sensor
image of Sony Alpha ILCE-A9
Front side of Sony A9 digital camera Front side of Sony A9 digital camera Front side of Sony A9 digital camera Front side of Sony A9 digital camera Front side of Sony A9 digital camera
Basic Specifications
Full model name: Sony Alpha ILCE-A9
Resolution: 24.20 Megapixels
Sensor size: 35mm
(35.6mm x 23.8mm)
Kit Lens: n/a
Viewfinder: EVF / LCD
Native ISO: 100 - 51,200
Extended ISO: 50 - 204,800
Shutter: 1/32000 - 30 seconds
Dimensions: 5.0 x 3.8 x 2.5 in.
(127 x 96 x 63 mm)
Weight: 23.7 oz (673 g)
includes batteries
Availability: 04/2017
Manufacturer: Sony
Full specs: Sony A9 specifications

A9 Summary

A flagship, professional-class full-frame mirrorless camera is here! The Sony A9 aims to dethrone the DSLR as the go-to choice for pro sports and action photographers. Sporting a new 24MP stacked sensor, a super-fast processor, and burst speeds up to 20fps with C-AF, the A9 is extremely fast and accurate. Image quality is excellent, and its burst rate and C-AF chops are some of the best we've ever seen. With a rugged build, better battery, more controls, and a price that undercuts flagship cams from Canon and Nikon, the Sony A9 looks promising all around. Time will tell if pros make the switch, but we think they should definitely consider it.


New sensor offers incredible performance; Excellent image quality at low & high ISOs; Very good dynamic range; Phenomenal 20fps burst speed & deep buffer; Very good battery life for a mirrorless; 4K video; Dual card slots.


Slow buffer clearing; Only one UHS-II card slot; Touchscreen underutilized; No lossless RAW compression option; No 4K/60p option.

Price and availability

The Sony A9 body-only went on sale beginning in May 2017 with an MSRP of about US$4,500 (CAD$6,000).

Imaging Resource rating

5.0 out of 5.0

Sony A9 Review

by , Jaron Schneider, Brent Durand, , , and Zig Weidelich
Originally posted: 04/19/2017
Last updated:

04/25/2017: Tech Info added
04/27/2017: Field Test Part I & Gallery Images added
05/22/2017: Sony A9 Live Stream added
05/22/2017: First lab shots posted
05/29/2017: Image Quality Comparison posted
05/31/2017: Performance page posted
06/13/2017: Print Quality posted
06/16/2017: A9 Overheating Test posted
07/14/2017: Field Test Part II posted
07/25/2017: Video Features & Analysis posted
08/08/2017: Field Test Part III posted
10/06/2017: Review Conclusion posted


• • •


Sony A9 Conclusion

by | Posted: 10/06/2017

Though we as an organization avoid reporting on rumors and speculation of future camera products, we can't help but get just as excited as the next person speculating about upcoming new gear! One of the most hyped and most rumored cameras in recent years has been the Sony A9. Sony's A7-family of full-frame mirrorless models have been a tremendous hit with photographers and videographers, both professionals and enthusiasts. Given the range of different A7 models, each with varied capabilities and features, folks were extremely curious about where Sony would go next. With a growing catalog of lenses, a refined and compact body design, and high-performance phase-detect autofocus -- to name a few -- there were fewer and fewer areas left where DSLRs had the clear advantage over Sony's mirrorless cameras.

Sony A9 Review
FE 70-200mm F2.8 GM OSS: 182mm, f/2.8, 1/4000s, ISO 2500

At last, with the A9, Sony takes aim squarely at the flagship DSLRs from Canon and Nikon, the 1D X Mark II and D5, respectively. For many professional photographers, the idea of a small, lightweight mirrorless camera is an attractive prospect, but they often demand true workhorse cameras -- ones that are tough, reliable, accurate and at the end of the day let them get the shots they're after. For many shooters, current mirrorless cameras do just fine in a professional environment, however for sports and action photographers, especially, flagship DSLRs still have the edge in the speed, performance and accuracy departments over a mirrorless camera.

That is, until now.

Performance: Amazing burst speeds & top-notch C-AF

Thanks to the all-new, stacked, full-frame sensor, which combines a back-illuminated design with on-board DRAM memory, and the latest BIONZ X image processor, the A9 makes some pretty bold performance claims on its spec sheet. Competing against the likes of the 1D X Mark II and D5 flagship DSLRs, the A9 needs to be top-notch in its speed and accuracy, and for the most part, Sony succeeded here.

Impressively, the Sony A9, both in our lab tests and in the field, offers astonishing performance in many areas, including its class-leading 20fps continuous shooting rate, even at full resolution and with RAW+JPEGs. 20fps is scary-fast and can add a level of complexity to your workflow -- be prepared to shoot LOTS of photos! You'll rack up tons of images in no time, so have lots of high-capacity memory cards on-hand and lots of hard drive space available.

Sony A9 Review
FE 100-400mm F4.5-5.6 GM OSS: 339mm, f/5.6, 1/2000s, ISO 25,600

Equally impressive alongside the 20fps burst is the A9's autofocus system. The big story here is continuous AF, which proved excellent during our testing. Single-shot AF was fine, but nothing remarkable based on our numbers, but it got the job done. And for a sports- and action-centric camera, the A9 excelled beautifully and rarely missed a shot when it came to C-AF thanks to its sophisticated phase-detect AF and excellent subject tracking capacities.

Flagship performance with a few hiccups

But, despite its impressive burst rates, the A9's performance is not without caveats. First, the 20fps works only with electronic shutter; mechanical shutter only gets you 5fps. We didn't spot much if any rolling shutter artifacts with the electronic shutter, so that's a big relief. With 20fps, thankfully, the Sony A9 also has a very generous buffer capacity, but buffer clearing times were disappointingly sluggish, even with a UHS-II card. Buffer clearing was particularly slow with JPEGs, which is interesting and concerning, especially considering that many pro sports photographers, for example, rely on JPEGs during assignments for their smaller file sizes and faster transmit times back to photo editors. In our tests, the A9 took just under four minutes to clear a 350+ JPEG buffer, whereas it took 36 seconds to clear 126 uncompressed RAW files.

Like many other Sony cameras, the A9 still locks you out of the menus while the buffer is clearing; another frustration. However, given the A9's level of button customization, you can somewhat workaround this Menu-lockout limitation. The camera provides a variety of Menu-specific functions that can be assigned to any number of the A9's buttons. During buffer clearing, the A9 still lets you access the main Function (Fn) shortcut menu, as well as any of the Menu functions you custom-set to a button. So, though you can't access the full Menu while the buffer is clearing, you can still access certain menu items that have been pre-assigned to a custom button -- it makes the Menu lockout issue slightly less frustrating.

Overall, though the Sony A9 is very quick and nimble, letting you easily capture fast action and sports subjects. The camera does need some tweaking and may require a few changes from your typical camera setup and workflow, such as enabling electronic shutter mode and using compressed RAW format in order to squeeze out the maximum shooting performance of the camera.

Sony A9 Review
FE 12-24mm F4 G: 12mm, f/6.3, 1/1000s, ISO 100, -0.7EV
Excellent image quality: lots of detail, nice higher ISOs & great dynamic range

Image quality overall is excellent with the A9, both at low ISOs and at higher sensitivities. The camera's JPEG engine works well at balancing detail with noise reduction as the ISO climbs. In both real-world shooting and lab testing, the A9 did very well up to ISO 12,800. Images still had a good amount of detail with controlled noise; an 8 x 10 inch print looks great at this ISO. Given Sony's strengths in this area in other cameras, it's not surprising for the A9 to excel here as well. Nonetheless, for a camera designed for versatility, it's great to see that the A9 can handle difficult lighting conditions.

Sony A9 Review
FE 12-24mm F4 G: 18mm, f/4, 10s, ISO 6400

Dynamic range was also excellent, especially for a sports- and action-centric camera, which allowed for lots of flexibility in post production. Compared to its two main rivals, the A9 offers similar dynamic range performance to the 1D X II, edging ahead of the Canon at higher ISOs, while besting the D5 at low ISOs, in particular, and keeping pace with it at higher levels.

Video: Lots of features, but not quite a pro's A-cam

While the primary use of the Sony A9 will likely be for sports photography, it's still a very capable video shooter just like Sony's A7-series full-frame cameras. 4K video is offered up to 30p frame rate, and the quality is excellent -- detail, color and dynamic range are all very good -- even at higher ISOs (up to around ISO 10,000). The A9 oddly crops 4K/30p video slightly, yet doesn't for 4K/24p. For a $4500 professional-level camera, the lack of 4K/60p is also a bit surprising, though you can get higher framerates with Full HD settings -- all of which look great. The A9 offers clean HDMI output as well as headphone and microphone jacks, but lacks other cinema-focused features like S-LOG picture profiles. As with stills, the AF performance with video is stellar, but the touchscreen felt imprecise with no visual feedback as to where you're placing the AF point. Overall, the Sony A9 is a solid video camera, though perhaps not as a primary cinema rig; certainly a solid B-camera or other secondary video camera.

Sony A9 Review
Build Quality: Weather-sealed, more controls, beefier battery

Design-wise, the Sony A9 remains very similar to its A7-series siblings -- compact, modern styling with a deep handgrip and numerous physical controls -- yet with some new features and improvements to better suit professional photographers. The addition of the dedicated drive mode/speed + AF mode combo dial makes it super quick to change critical shooting modes without having to dive into the menu -- something pros out in the field will certainly appreciate. (We'd love to see this dial implemented on future Sony cameras.) Further, the joystick-like control on the rear again reinforces the A9's focus on speed and quick access -- this control designed for instant movement of the A9's numerous AF points.

The all-magnesium alloy body feels very solid and robust. Sony advertises "dust- and moisture-resistance" including seals around button and controls. The camera feels built to a more rugged degree than the A7-series, but is the A9 as weather-sealed as flagship DSLRs from Canon and Nikon? That remains to be seen.

The A9 is one of the rare Sony mirrorless cameras to offer a touchscreen, and their first full-frame E-mount camera to do so. Like the Canon 1D X II, however, the A9's touchscreen is limited in functionality and only implemented for tap-to-focus. We suspect many long-time pros will be fine with this arrangement, opting to stick with the viewfinder for most shooting. And the electronic viewfinder itself is fantastic. Bright, large and crisp, the A9's EVF provides an accurate view with 100% frame coverage.

Compared to the A7-series, the A9 offers a couple very important upgrades to meet the demands of pros: battery life and dual memory cards. The compact size of the A7 models meant compromising with smaller batteries, especially compared to DSLRs. Plus, an optical viewfinder uses far less power than the constantly-in-use EVF and LCD screen of a mirrorless camera. The Sony A9 offers an all-new, larger-capacity battery, and it works extremely well. Although its CIPA rating is still well below that of a DSLR, the bigger battery lets the A9 easily last throughout the day, even after shooting thousands of frames based on our real-world testing.

The dual memory cards are a new feature for a Sony mirrorless camera, too, letting you have an instant backup card for your shots, or simply record RAW to one and JPEGs to another, for example. However, the fact that both slots are not UHS-II-compatible (only one is) is rather disappointing.

Sony A9 Review
FE 12-24mm F4 G: 24mm, f/6.3, 1/250s, ISO 800

Summary: Sony knocks it out of the park with their first "flagship" mirrorless

All in all, the Sony A9 is a stunning technological achievement. The speed and performance offered in such a small, compact camera is amazing. The camera's 20fps burst with continuous AF is scary -- it works very well, but you'll fill your memory card(s) very quickly if you're not careful. The A9's image quality performance is top-notch, as well, and the camera's speed and AF capabilities are excellent, though not without its a few downsides. Regardless, the A9 feels like a true professional-grade camera aimed at professionals, that also happens to be a mirrorless camera. Time will tell as to whether or not the A9 has enough "oomph" to sway the professional folks away from the tried-and-true world of flagship DSLRs, but the Sony A9 is seriously worth giving a try. Job well done, Sony.


Pros & Cons

  • Stacked, backside-illuminated 24MP full-frame sensor offers incredible performance
  • Higher resolution than other sports shooters
  • Great high ISO performance
  • Very good dynamic range for a sports shooter
  • Excellent JPEG engine (apart from sub-par color)
  • 5-axis in-body image stabilization
  • 693 phase-detect AF points
  • Phenomenal 20fps burst speed with AF/AE
  • Very deep buffers
  • Very low shutter lag
  • Fast e-shutter
  • Large, high-res EVF with excellent coverage
  • Dual card slots (but see related con)
  • Larger battery offers good battery life for a mirrorless
  • Optional grip doubles battery life
  • Supports USB charging
  • Built-in Wi-Fi, NFC and Bluetooth
  • Ethernet port (1000 Base-T Gigabit Wired LAN)
  • Rugged, weather-sealed construction
  • Lots of customizable controls
  • New dedicated AF mode/Drive speed dial
  • Touchscreen LCD, but limited in functionality
  • 4K Ultra HD video with clean HDMI out @ UHD 4:2:2 8-bit
  • Excellent video quality
  • 1080p video @ 60p, 100p & 120p
  • C-AF for video is very good
  • Headphone, microphone jacks
  • Sluggish power-on time compared to pro DSLRs
  • Slow buffer clearing even with fast UHS-II card
  • Can't access menus while buffer is clearing (Function menu & custom buttons still work, though)
  • Only one card slot supports UHS-II
  • Default JPEG colors a bit muted
  • Somewhat cool auto white balance outdoors
  • Still no lossless RAW compression option
  • Burst rate limited to 5fps with mechanical shutter, and 12 fps with uncompressed RAW
  • 4K video is cropped in by about 1.2x at 30p
  • No visual feedback for tap-to-focus in video
  • Lacking 4K/60p video option
  • Expensive (but it is competing against $5/6K flagship DSLRs)


• • •


Sony A9 Overview


Sony A9 Review -- Product Image

Answering the calls of the most demanding professional photographers, Sony has started a new E-mount camera series with the full-frame Sony A9. This brand-new camera combines a new, state-of-the-art image sensor with a new autofocus system and a variety of new features and improvements to their proven and popular approach to mirrorless cameras. Let's look at the features and specifications of the Sony A9.

Sony A9 Key Features

  • Durable camera body that retains the compact form factor of previous full-frame E-mount bodies
  • Joystick and AF-On button for enhanced autofocus control
  • Higher-capacity battery
  • 3-inch touchscreen display
  • High-resolution, 120 frames per second electronic viewfinder with no blackout
  • 5-axis in-body image stabilization
  • 24.2-megapixel stacked back-illuminated full-frame CMOS sensor
  • ISO 100 to 51,200, expandable to 50-204,800
  • Up to 20 frames per second continuous shooting
  • UHS-II support
  • 4K video with full-pixel readout

Camera body

Styling and controls: Designed for improved usability

While the Sony A9 shares similar design elements with the Sony A7 series of cameras, it has a few differences that should satisfy Sony shooters. On the top deck of the camera, one of these changes are stacked, independent Drive and Focus Mode dials. No longer will you need to scroll through menus or set a custom function for switching the focus mode. Both dials are lockable as well to prevent accidental changes to settings during shooting.

Sony A9 Review -- Product Image

The back of the camera has seen changes as well. There is now a dedicated AF-On button, perfect for photographers who enjoy using back-button autofocus techniques. Below the AF-On button and to the right of the display more on that in a bit is a new multi-selector joystick. This multi-selector provides direct, immediate control over autofocus points or for scrolling through images during playback. Astute readers will also note that the video record button has been moved next to the EVF, which puts it within natural reach of your thumb.

Sony A9 Review -- Product Image

The Sony A9 includes numerous ease-of-use changes as well, some of which may not be immediately apparent but will help make the camera more user-friendly. There is a new My Menu feature. This dedicated menu allows users to store and customize up to 30 menu items for quick recall. You can also designate certain settings, such as shutter speed, aperture, AF area and more, to be recalled when holding function buttons. Regarding focus settings in particular, you can register frequently used focus area settings for future use and can use separate or identical focus areas and points for horizontal or vertical-orientation shooting. Customizability matters for many users and in total, there are 11 buttons on the A9 which can be customized and reassigned to control up to 72 different functions.

Sony A9 Review -- Product Image
Durable and pro-oriented body is rugged and offers new workflow features

Designed to meet the exacting standards of professionals, the Sony A9 includes numerous reliability and usability improvements over the A7 series of cameras. The magnesium alloy body has dust and moisture resistance around most of its controls and buttons, allowing the camera to be used in demanding situations, although note that it is not guaranteed to be 100 percent dust and moisture proof despite its seals and tongue-and-groove joints.

There have also been changes to the E-mount itself. Sony has increased the rigidity of the mount and added a pair of screws (bringing the total to six) so that the mount will remain durable and strong when supporting heavy telephoto lenses.

Sony A9 Review -- Product Image

The Sony A9 can be used longer between charges as well, as the new NP-FZ100 battery provides twice the life of the previous NP-FW50 battery, CIPA-rated at approximately 480 still frames on a charge when using the electronic viewfinder, and 650 shots with the LCD monitor. There is an optional VG-C3EM vertical battery grip available which can double battery life, and the optional NPA-MQZ1K Multi Battery Adaptor Kit can hold up to four batteries and act as external power source.

Looking at the right side of the camera, we find dual media slots. The Sony A9 supports SD/SDHC/SDXC memory cards but one of its slots can also use a Memory Stick Duo card. Unlike previous Sony cameras, the A9 now features UHS-II card support, but only in one slot. The second slot unfortunately only supports up to UHS-I.

Sony A9 Review -- Product Image

Workflow is critical for photographers on strict deadlines, so Sony has included wired gigabit LAN support for FTP file transfer. Further workflow improvements include new PC remote storage options, faster startup, copyright information embedding, a flash sync terminal, the ability to have the camera automatically shut off at certain temperatures and the ability to edit the first three characters of file names.

Additional wired connectivity includes a Multi Micro USB 2.0 data port which also supports a wired remote, tethering, USB power and in-camera charging, a Micro (Type-D) HDMI port, 3.5mm headphone and external mic jacks, and a Multi Interface hot shoe. The Sony A9 also has an IR receiver in the grip with support for the RMT-DSLR1 and RMT-DSLR2 Wireless Remote Commanders.

Sony A9 Review -- Product Image

The Sony A9 also includes wireless via Wi-Fi, NFC and Bluetooth functionality. In addition to being able to remotely control the camera and transfer images wirelessly with PlayMemories Mobile on your smartphone, the camera can also embed location data from your phone into captured images.

Image stabilization

With a newly-developed 5-axis optical image stabilization unit built into the body, the Sony A9 is stated to offer up to five stops of vibration reduction. And since stabilization is applied to the live view image, it helps keep your shots properly composed even when shooting in low light or using a long, heavy lens.

Display: First tilting touchscreen display in a flagship Sony camera

The Sony A9 includes a 3-inch type 1,440K-dot touchscreen LCD. This is the first pro-oriented Sony camera to include a touchscreen display and allows functionality such as Touch AF. The monitor tilts as well, a maximum of 107° upward and a maximum of 41° downward. The display includes WhiteMagic technology (white pixels in addition to red, green and blue) designed to help the display be viewable even when used in bright lighting conditions.

Viewfinder and shutter: No blackout and vibration-free, silent shooting

The Sony A9 is all about speed. Being able to capture images quickly doesn't mean much to sports shooters in particular if you don't have a good viewfinder experience. We have seen Sony give attention to viewfinder speed and performance in many of its recent cameras, but the A9 aims to take it to the next level with zero viewfinder blackout, even when shooting at 20 frames per second, and a direct viewfinder image of the subject during tracking and capture.

Sony A9 Review -- Product Image

Looking at the viewfinder itself, it is a 0.5-inch OLED viewfinder with 3,686K dots and it operates with a 120fps refresh rate (60fps live-view refresh rate). The Tru-Finder EVF features a generous 0.78x magnification and 100% coverage. The viewfinder also has Zeiss T* coating to reduce reflections.

Paired with the viewfinder is a hybrid shutter mechanism. The mechanical shutter has been refined and offers lower vibration than previous mechanical shutters. Further, the shutter is rated for 500,000 cycles. The silent, zero-vibration electronic shutter offers shutter speeds up to 1/32,000s and is said to offer minimal distortion. The mechanical shutter tops out at 1/8,000s, but both can shoot with shutter speeds as slow as 30 seconds. The mechanical shutter also offers a bulb setting. Further, flash sync speed is 1/250s.

Sony A9 Shooting Features

Image sensor: 24.2-megapixel sensor is the first-ever stacked full-frame CMOS image sensor

The Sony A9 is the first full-frame camera to utilize a Sony Exmor RS back-illuminated image sensor with a stacked structure. This stacked design is engineered to offer faster readout. In fact, Sony states that the new sensor is 20 times faster than their previous front-illuminated CMOS image sensor found in the A7 II. The pixel layer of the image sensor sits on top of a separate pixel layer – which has a high-speed signal processing circuit and integral memory – which both sit above the Bionz X image processing engine, which itself includes a new front-end LSI to reduce noise while improving image detail over a wider ISO range.

Sony A9 Review -- Product Image

The 24.2-megapixel Exmor RS CMOS sensor can capture uncompressed or compressed 14-bit RAW images across a wide ISO range of 50 to 204,800, although the native ISO range is 100 to 51,200. Sony is claiming 14-stop dynamic range from the new sensor. Further, the sensor includes a charge protection coating on its optical filter and an image sensor shift mechanism to help keep dust off the sensor.

Exposure: Improvements to metering and Auto ISO

With a 1200-zone evaluative metering sensor, the Exmor RS CMOS sensor-based metering system of the Sony A9 has a working range of -3 EV to 20 EV. The metering modes include Multi-segment, Center-weighted, Spot (standard and large options are available), Entire Screen Average and Highlight. Exposure compensation is available for +/-5 EV in 1/3 and 1/2 EV steps. Users can also set a standard exposure value of +/-1 EV in 1/6 stop increments which can be set independently for each metering mode.

Regarding spot metering, the A9 can link either a standard or large spot metering area to flexible or expanded spot focus areas. The highlight metering mode helps prevent blown highlights by detecting the brightest area in the frame and the average mode is designed to provide consistent exposure even when changing composition.

The Sony A9 offers more customization to Auto ISO. You can set the shutter speed above which the ISO changes when the camera is set to P or A shooting modes. You can specify a low ISO Auto limit for minimizing motion blur when shooting a moving subject as well.

Sony A9 Review -- Product Image
Autofocus: 693 phase-detection autofocus points over 93% of the image area

The Sony A9 uses Sony's latest hybrid 4D Focus autofocus system. This autofocus system includes 693 phase-detection points which cover 93% of the image area. In addition to these 693 PDAF points, there are also 25 contrast-detection autofocus points. The end result is a hybrid autofocus system which Sony claims is 25% faster than the autofocus system in the Sony A7R II.

Autofocus isn't solely about speed, however, as accuracy, low-light performance and modes matter too. The Sony A9 includes enhanced Eye AF, providing approximately 30 percent better eye accuracy compared to the Sony A7 II. Face detection has seen improvement. Low light autofocus is rated down to -3.0 EV with an f/2.0 lens, which while not rated for as low light as some professional DSLR cameras, is still very low. The A9 offers an expand flexible spot mode, designed for moving subjects, which can automatically shift focus to one of eight adjacent autofocus points when tracking a subject.

For users with A-mount lenses, it is worth pointing out that the A9 is designed to work well with adapted A-mount lenses as well. Granted, continuous tracking AF caps the burst rate at 10 frames per second with A-mount lenses mounted using the LA-EA3 adapter, but that should still prove plenty fast for many users. See this Sony support page for the various continuous shooting and AF tracking capabilities, as it heavily depends on the lens and adapter type.

Sony A9 Review -- Product Image

Photographers looking for extra reach and using the A9 in APS-C mode (either with a full-frame lens or an APS-C lens) will still be able to utilize many autofocus points. When shooting with a full-frame lens in the APS-C format (10 megapixels), the A9 can use 299 phase-detection autofocus points. When using an APS-C lens, the number drops to 221 PDAF points and 25 contrast-detect AF points.

Performance: Capture up to 241 full-resolution RAW images at 20 frames per second

Speed. That is clearly the primary focus for Sony with the A9 and its specifications are impressive. According to Sony, the camera can capture up to 241 full-resolution compressed RAW images (or 362 max-quality JPEG images) at a blazing fast 20 frames per second. Not only that, but the camera is doing this with full AF/AE tracking and without viewfinder blackout. The A9 calculates AF and AE up to 60 times per second, allowing what Sony says is improved tracking of subject movement and changes in lighting conditions.

If you want to shoot RAW+JPEG or uncompressed RAW, Sony’s published specifications claim 222 RAW+JPEG frames, 128 uncompressed RAW frames and 118 uncompressed RAW+JPEG image buffer depths. These numbers are similar to what the A9 managed in the lab. Unfortunately, buffer clearing still takes a long time (especially with such deep buffers), even with a fast UHS-II card. See our Performance page for details.

Sony A9 Review -- Product Image

Sony A9 Video: 4K UHD video at 100Mbps

The Sony A9 records 4K UHD (3840 x 2160 resolution) video with full pixel readout and no pixel pinning. This allows the camera to condense up to 2.4 times the necessary data for 4K video into a 4K output. The camera offers clean HDMI output for both 4K and Full HD video to external recorders or monitors and the camera can simultaneously record internally and externally.

4K video can be recorded with a bit-rate up to 100Mbps and frame rate as fast as 30 frames per second in the XAVC 4K file format. Full HD video can be recorded at up to 120fps using the XAVC S HD recording format with a 100Mbps bit-rate. Regarding frame rate, the A9 records video from 1 frame per second up to 120fps in Full HD quality, allowing recording of 60x quick motion to 5x slow motion video. Slow and Quick motion effects can be previewed in camera, eschewing the need for post production.

Autofocus performance is improved for video recording thanks to the new hybrid 4D Focus system. There is now a wider AF area that covers the same amount of the frame as still images and focus tracking is said to be better as well.

Sony A9 Review -- Product Image

Sony A9 Pricing and Availability

The Sony A9 began shipping from May 25th with a price tag of about US$4,500 (CAD$6,000) for the body only.

Alongside the camera, Sony introduced a variety of accessories for the Sony A9. In addition to the new NP-FZ100 battery (~US$80), VG-C3EM vertical grip (~US$350) and NPA-MQZ1K multi-battery adaptor kit (~US$400) mentioned earlier, Sony has released a GP-X1EM grip extension (~US$130), FDA-EP18 eyepiece cup (US$11) with locking mechanism, and a shatterproof PCK-LG1 glass screen protector (US$28) for the new touchscreen display.


Sony A9 Live Stream

Want to know more about the Sony A9? Courtesy of our affiliates at B&H Photo Video, you can get your questions answered and have the opportunity to win a Sony A9 of your very own by tweeting your questions for a live panel discussion.

Update: Livestream has ended, but the video below can be re-watched.


Sony A9 Field Test Part I

High-speed sports shooting straight from NYC

by William Brawley |

Sony A9 field test photo(Formerly titled "Sony A9 Gallery Supplement")
IR publisher Dave Etchells and I had an opportunity to shoot with the all-new Sony A9 following the big press conference announcing the camera in New York City last week. We've now be given the green light to publish full-resolution, real-world images (both RAWs and JPEGs) from this new flagship Alpha camera. Better still, we're told these are final image quality, so this is it! To get our initial take on the camera with some important shooting notes, read on below, but if you simply want to cut to the chase, jump on over to our Sony A9 Gallery Page for a full bevy of sample images.

Given the A9's reported pro-level chops when it comes to autofocus, particularly continuous AF, as well as its super-quick 20 frames per second burst shooting capabilities, it was no surprise that Sony organized a variety of high-speed sporting events for us to photograph. The morning session consisted of both ice hockey and figure skating, while the afternoon shooting took place in a massive track and field training facility hosting a variety of Olympic-style sports, such as running (50m dash, baton relay, etc), pole vaulting and triple jump, as well as cheerleading, table tennis and taekwondo.

Sony A9 Field Test Part II

The A9 body is the best full frame mirrorless design from Sony yet

by Jaron Schneider |

Sony A9 field test photoIntroduction: A bigger, better, higher-performance Sony mirrorless camera
I have shot with every full frame Sony mirrorless that they have released, and it's been a fun ride watching them iterate and improve on their design over the last few short years. Originally, their ILC camera design was supposed to be as small and compact as possible, and it felt like Sony was willing to make more sacrifices to the camera's performance and comfort level in order to achieve this. With the A9, it appears that Sony has finally been willing to strike some kind of a middle ground. With a body that's slightly larger than the A7R II (which was slightly larger than the A7R), the A9 boasts a minor size boost and in exchange a more comfortable grip, larger battery and better heat sinking than its predecessors.

The A9 keeps much of what Sony users will find familiar while doing a little to make their camera more comfortable for those with larger hands. I used the camera exclusively without the optional battery grip and found it to be quite comfortable to hold. I, however, do not have the largest hands. In contrast, two of my friends who do have larger hands found it to still be smaller than they would have liked, with both their pinkie finger and ring finger not fitting into the given grip space and being forced to press up against the bottom of the battery compartment, which is not very comfortable. This can easily be solved by using the battery grip, but that's not the most elegant "solution" to the problem to them.

Sony A9 Field Test Part III

Blazing up the trail to Mt. Whitney

by Brent Durand |

Sony A9 field test photo The Sony A9 arrived on the scene this past April, offering pro shooters a blazing fast, versatile, full frame mirrorless camera. The A9 is built around an all-new, full-frame backside-illuminated 24.2MP stacked CMOS sensor, which places the photodiodes closer to the surface of the sensor. This design, combined with its uniquely integral memory, enables the lighting-quick burst shooting and very deep buffers that make this camera stand out to action shooters. The A9 is capable of shooting 20fps with no blackout and 60 autofocus and exposure calculations per second. Additionally, the backside-illuminated design allows more light to reach each pixel, which (in theory at least) produces better image quality and high-ISO performance.

I recently had a chance to shoot the A9 in some fun conditions while hiking California's iconic Mt. Whitney. Needless to say, I was excited to take the A9 on the hike with the new Sony FE 12-24 F4 G ultra-wide zoom lens. Here are a few thoughts from the field...

Sony A9 Overheating Test

Try as we might, we could not make the Sony A9 overheat

by Jaron Schneider |

Sony A9 overheating?When the Sony A9 first became available to the public, just about immediately a video surfaced online complaining about it overheating in what should have been a relatively unchallenging environment. In that video, the photographer said that within 20 minutes of shooting in 81 degree Fahrenheit weather, the camera warned him that the internal temperature was getting too high, and that it was soon to overheat. When I saw this video, I was shocked. I and other members of the Imaging Resource staff had already shot extensively with the A9 and found it to work outstandingly in all cases. I personally shot with it outside in Santa Barbara in the sun for a full day with no problems, so it seemed odd that this one person was struggling with the camera overheating. We decided that we had to test for ourselves if we could get the camera to overheat.

Before I go over the test, I want to make it clear that I did install the new firmware that Sony released for the A9 before I conducted the test. The firmware likely tells the A9 where to set the threshold for warning users about a possible overheat, not preventing overheating altogether (that seems impossible for just a firmware update). So the firmware update should not have changed the camera's propensity to overheat, only how long it would go before warning you that it was about to.

Sony A9 Technical Info

A look at the tech inside Sony's mirrorless powerhouse

by Mike Tomkins |

Sony A9 image qualityBody. Although the Sony A9 looks quite similar to the A7-series at first glance, it sports a newly-designed body featuring magnesium alloy panels at front, top and rear, as well as a magnesium alloy internal frame supporting this external structure. The lens mount is also now said to be more rigid, with six screws instead of four to give it sufficient strength for use with heavy telephoto lenses.

The Sony A9 body is said to be comprehensively sealed for dust and moisture resistance, although the company doesn't specify how many seals are included in total.

Sensor. Inside its weather-sealed body, the Sony A9 sports the world's first stacked 35mm full-frame CMOS image sensor. The Exmor RS-branded sensor combines a high-sensitivity backside-illuminated design with on-chip memory, allowing for a claimed 20x improvement in readout speed. It also features gapless microlenses.

The sensor has a 3:2 aspect ratio and an effective resolution of 24.2 megapixels from a 28.3-megapixel total resolution. Dimensions of the chip are 35.6 x 23.8mm.

Sony A9 Image Quality Comparison

See how the Sony A9's IQ compares to other high-performance cameras

by Zig Weidelich |

Sony A9 image quality Below are crops taken from our laboratory Still Life target comparing the Sony A9's image quality to other current sports-orientated flagship cameras: the Canon 1DX Mark II, Nikon D5, Olympus E-M1 Mark II and Sony A99 Mark II. We've also included its closest sibling in terms of resolution, the 24-megapixel Sony A7 Mark II, to better see how image quality has changed since its release. Note that these shots were taken with the Sony A9's mechanical shutter using the self-timer for best image quality (as we do for all cameras that offer a choice of shutter modes). We will be examining the effect of the electronic shutter on image quality in our full test results once we have finished testing the Sony A9 in the lab.

NOTE: These images are from best quality JPEGs straight out of the camera, at default settings including noise reduction and using the camera's actual base ISO (not extended ISO settings). All cameras in this comparison were shot with our very sharp reference lenses. Clicking any crop will take you to a carrier page where you can click once again to access the full resolution image as delivered straight from the camera. For those interested in working with the RAW files involved: click these links to visit each camera's respective sample image thumbnail page...

Sony A9 Hands-On Preview

A true mirrorless monster

by William Brawley |

Sony A9 tech section illustration After the press conference of Sony's surprise unveiling of their latest flagship Alpha camera, the Sony A9, I was able to get some brief hands-on time with the new camera. With various units set up around a few indoor sporting demonstrations, I was able to get a sense of just how fast and nimble this new full-frame mirrorless camera really is. Unfortunately, these demo cameras had taped-up card slots, so no sharing of any photos taken with the camera today. (But stay tuned!)

The Sony A9 is all about speed and performance
First and foremost, this camera is all about speed and performance. Thanks to its stacked sensor design, the A9 can shoot at up to 20 frames per second for over 200 frames in RAW or RAW+JPEG mode. The stacked sensor design, first seen in the 1-inch-type RX100 IV, sees the A9 now brings that tech up to full-frame. The on-board memory and signal processing handles the massive data load extremely quickly, giving you that nimble high-speed burst capability. In my brief experience with the camera thus far, let me tell you that it is indeed fast. Very fast. In a sports-shooting scenario, you can fire off bursts of shots in quick succession, or mash the shutter button for tons of frames to make sure you nail the precise moment.


In the Box

The Sony A9 box (as tested) contains the following items:

  • Sony Alpha ILCE-9 Body
  • NP-FZ100 Rechargeable Lithium-Ion Battery
  • BC-QZ1 Battery Charger
  • AC-UUD12 AC Adapter
  • Power Cord
  • Cable Protector
  • Body Cap
  • Accessory Shoe Cap
  • Eyepiece Cup
  • Micro USB Cable
  • Shoulder Strap
  • Sony 1 Year Limited Warranty


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