Basic Specifications
Full model name: Canon PowerShot G1 X Mark III
Resolution: 24.20 Megapixels
Sensor size: APS-C
(22.3mm x 14.9mm)
Lens: 3.00x zoom
(24-72mm eq.)
Viewfinder: EVF / LCD
Native ISO: 100 - 25,600
Extended ISO: 100 - 25,600
Shutter: 1/2000 - 30 sec
Max Aperture: 2.8
Dimensions: 4.5 x 3.1 x 2.0 in.
(115 x 78 x 51 mm)
Weight: 14.1 oz (399 g)
includes batteries
Availability: 11/2017
Manufacturer: Canon
Full specs: Canon G1X Mark III specifications
3.00x zoom APS-C
size sensor
image of Canon PowerShot G1 X Mark III
Front side of Canon G1X Mark III digital camera Front side of Canon G1X Mark III digital camera Front side of Canon G1X Mark III digital camera Front side of Canon G1X Mark III digital camera Front side of Canon G1X Mark III digital camera

Canon G1X Mark III Review -- Now Shooting!

By Jaron Schneider, Jeremy Gray
Preview posted: 10/16/2017
Updated: 03/27/2018

12/12/2017: First Shots posted
02/08/2018: Performance posted

03/14/2018: Field Test Part I posted
03/27/2018: Field Test Part II posted

• Click here for our G1X III Product Overview


• • •


Canon G1X III Field Test Part II

Generally capable but imperfect and expensive

by Jeremy Gray | Posted 03/26/2018

Recap of Field Test Part I

In my G1X Mark III Field Test Part I, I looked at the camera's design, image quality and built-in lens. As we saw, the move to a larger APS-C sensor resulted in good image quality, but it also had some negative consequences for the camera's built-in lens, which has less zoom than its predecessor.

In the second Field Test, I will be looking at the shooting experience with the Canon G1X III, the camera's autofocus performance, speed, shooting modes and video functionality.

Shooting Experience: A very easy-to-use camera that handles most situations well

The shooting experience with the G1X III is generally very good. The camera is quite compact and easy to slip away into a jacket pocket. Its controls are also quite good, so it is easy to use. While I didn't specifically discuss it in the first Field Test, the camera's touchscreen and resulting user interface and experience is enjoyable. The touchscreen works well, and you can fill the display with a lot of information, including a built-in level and live histogram. I also shot with a rule of thirds grid overlay. The different shooting parameters, including shutter speed, aperture and ISO, can be adjusted via on-screen touch elements if you want.

The camera meters quite well, although like many compact cameras, it can struggle in lower light to dial in a correct exposure. The G1X III has an exposure compensation dial on the top of the camera, which is convenient particularly when the camera doesn't meter as expected.

45mm (72mm equiv.), f/5.6, 1/640s, ISO 200, +0.67 exposure compensation.
Click for full-size image. Click here for RAW image.
Even at +0.67 exposure compensation, the image was underexposed by a fair amount. I like that the exposure compensation dial is on the top of the camera, but I found it occasionally difficult to predict how the camera would behave.

Shooting Modes

The G1X III includes many shooting modes, as well. By turning the mode dial to "SCN," which stands for scene, you can select from numerous shooting presets such as: self portrait, portrait, smooth skin, panoramic shot, panning, star, handheld night scene, grainy B/W, soft focus, fish-eye effect, art bold effect, water painting effect, toy camera effect, miniature effect, HDR, underwater and fireworks. Regarding the panoramic and HDR modes in particular, they work okay but certainly leave something to be desired when compared to creating manual panoramas or HDR images. The HDR mode offers a few different options: natural, art standard, art vivid, art bold and art embossed.

15mm (24mm equiv.), f/2.8, 1/500s, ISO 200
Click for full-size image.
The Canon G1X III includes a brand-new in-camera panorama stitching mode. It does a good job of stitching the images together in camera, although for the best results, you are still better off capturing and merging frames manually. However, for how convenient the in-camera mode is, I was impressed.
15mm (24mm equiv.), f/2.8, 1/500s, ISO 200
100% crop from the above panorama image. Click for full-size image.
15mm (24mm equiv.), f/4.0, 1/800s, ISO 100
Non-HDR image. Click for full-size image.
The G1X III also includes in-camera HDR shooting. This is a non-HDR shot.
15mm (24mm equiv.), f/4.0, 1/800s, ISO 100
HDR Art Vivid. Click for full-size image.
The G1X III also includes in-camera HDR shooting. As you can see, the camera does crop in slightly when shooting HDR images.


The G1X III includes built-in Wi-Fi and Bluetooth. When connecting my iPhone to the camera, you initially have to enter a password displayed on the screen. A nice aspect of the camera is that you can enable wireless communication easily by pressing a dedicated button on the right side of the camera body. Once connected, you can transfer images from the camera to your connected device and remotely control the camera.

The remote control functionality is as you'd expect from a Canon camera. You can control zoom, focus area, aperture and/or shutter speed depending on the camera's shooting mode -- which you cannot change in the app but must change on the camera itself -- as well as exposure compensation, ISO and more. The live view feed was very smooth during my testing, and the app feels responsive, if not quite as fully-featured as some competing cameras.

The G1X III has good wireless functionality, although the app is not as usable on the iPhone X. You can see that some on-screen controls are near the "home button" area at the bottom of the display.

For iPhone X owners, it's important to note that some of the on-screen controls are difficult to use due to the phone relying on the bottom of the display for the home "button." I have used the software on other iPhones before, and it works better on the non-X models. Hopefully an update to optimize the user interface is coming soon for iPhone X users.


With Dual Pixel CMOS autofocus, the G1X III delivers impressive focusing speed and accuracy. The camera has 49 autofocus points and a number of AF modes, which can be accessed easily through the "Q" menu. There is face detect + tracking, smooth zone AF and one-point AF. For drive modes, there are AF-S and AF-C options (known as One Shot and Servo). While the autofocus tracking isn't very fast or sophisticated, the camera's one shot autofocus is very good across the entire focal length range and in many different situations. There were very few times when the camera wouldn't acquire focus, even in dim conditions. Further, the autofocus points cover almost the entire image frame, which is very nice and useful in the field.

45mm (72mm equiv.), f/5.6, 1/160s, ISO 1600
Click for full-size image. Click here for RAW image.
The G1X III did a good job of not being tricked by the plants surrounding Sunny's face. I was also pretty impressed by the image quality at ISO 1600, which you can read more about in the first Field Test.


Equipped with a DIGIC 7 image processor, the G1X III is a pretty speedy little camera, especially when compared to its predecessor. The G1X II topped out at 5.3 frames per second when shooting JPEG images and 1.4 fps when shooting RAW. The G1X Mark III is much faster, capable of shooting up to 9 frames per second for both JPEG and RAW. In our lab testing, the camera actually beat the spec, shooting 14-bit RAW files at 9.38 fps.

The slower speed of the G1X II did allow it to have an unlimited buffer depth for JPEG and RAW shooting, but the G1X III trades that for much faster shooting speeds. The G1X III JPEG buffer is just over 20 frames and the RAW buffer comes up a bit shy of that 20-shot mark. Clearing speeds range from around five seconds to about 14 seconds for JPEG and RAW, respectively.

In real-world use, the buffer depths and clearing speeds are a little bit of an issue, but the camera's new-found speed should be a good trade-off for most shooters.

Video: Usability is strong, but quality is lacking

Canon G1X III Video Sample #1
1920 x 1080, 60fps, 15mm focal length, f/7.1, ISO 100.
Download Original (144.1 MB .MP4 File)

The G1X III is yet another Canon camera that only offers up to Full HD video recording, which is anticipated but nonetheless disappointing. Still, the camera can record 1920 x 1080 video at up to 60 frames per second, twice the fps of the G1X II.

Canon G1X III Video Sample #2
1920 x 1080, 60fps, varying focal length, f/8.0, ISO 100.
The exposure performance is pretty good here considering how challenging the scene is. However, the dynamic range is not super impressive from the G1X III. Can you spot the guest appearance in this video clip?
Download Original (90.2 MB .MP4 File)

The exposure and focus performance of the G1X III during video recording is impressive, and the camera is very easy to use. It has a dedicated video record button as well as a dedicated movie recording mode, which allows for manual exposure settings. Using the touchscreen to control exposure parameters is convenient and quiet, and the tilt-swivel display helps too.

Canon G1X III Video Sample #3
1920 x 1080, 30fps, 22mm focal length, f/8, ISO Auto.
The built-in stereo mic did fairly well here with Eevee's loud barking.
Download Original (52.8 MB .MP4 File)

With that said, while usability is excellent, the video quality itself isn't that great. The video is fairly soft, and the lack of 4K recording is unfortunate. It's not going to replace a dedicated video camera for many users, but the G1X III's great usability for stills is also a strength during video recording.

Canon G1X III Video Sample #4
1920 x 1080, 60fps, 15mm focal length, f/5.0, ISO Auto, Handheld.
The image stabilization did fairly well here on the G1X III.
Download Original (60.1 MB .MP4 File)

Field Test Part II Summary

The G1X III is well-designed and pretty good across the board

What I liked:

  • Lots of shooting modes
  • Impressive autofocus speed for stills and video
  • Fast continuous shooting
  • Video recording is easy

What I disliked:

  • Somewhat shallow buffer
  • Underwhelming video quality

I have looked at the important aspects of the Canon G1X Mark III and considered how the camera is during real-world use. In nearly all ways, the camera is easy to use while remaining quite capable. The image quality is nice, performance is mostly good, and the camera includes many shooting modes.

45mm (72mm equiv.), f/7.1, 1.3s, ISO 100
This image has been modified. Click for full-size image. Click here for RAW image.

It's not perfect, however, as the camera's larger sensor does have repercussions for the built-in lens. The camera requires significant optical corrections, which can affect RAW file processing depending on your software of choice, and the video performance is underwhelming. Further, the G1X III costs a hefty $1,299. That's a significant amount of money for a camera in the class of the G1X Mark III. You can get many interchangeable lens cameras for less money, which will prove more versatile. Of course, they will not fit in a coat pocket as easily as the G1X III.

This camera could make a great travel companion for those who don't need a long lens but desire good image quality across a wide range of ISO speeds. It could also work well for people who want something easy to use with a good touchscreen interface. However, in my opinion, for more demanding users and for those who value flexibility and versatility, the G1X III misses the mark.


• • •


Canon G1X Mark III Review -- Overview

By Jaron Schneider
Preview posted: 10/16/2017

Canon has added to their premium G-series compact cameras with the new G1X Mark III. Their new flagship PowerShot model, the G1X III brings several upgrades to the system including both an APS-C sized sensor and Canon's excellent dual pixel autofocus technology. For Canon, these are both firsts for their compact camera category.

The G1X Mark III is touted by Canon as the most advanced compact camera they offer designed for both enthusiasts and professionals.

The G1X Mark III brings APS-C to PowerShot

Of immediate interest is the 24.3-megapixel APS-C sized sensor that the G1X III now contains. It's a serious upgrade from the 1.5-inch sensor in the previous iteration. Canon says that the larger size of the sensor will do much for the quality of both photo and video, and the ISO sensitivity should improve as well. The G1 X Mark III's ISO range is 100-25,600, the same as is found in the and 80D. In fact, we're told it is the same sensor as the one found in both the 80D and the EOS M5.

Because it shares the same sensor as those two cameras, it should then come as no surprise that the G1X Mark III packs Canon's first foray at Dual Pixel CMOS AF in a compact camera. That Dual Pixel sensor is the main source of the camera's autofocus, with 80-percent coverage horizontally and vertically, across the frame. Canon says that the autofocus speed of the G1X III is extremely fast, and will rival that of DSLRs and their recent M-series cameras.

That large APS-C sensor pairs with a 24-72mm-eq. f/2.8-5.6 3x zoom lens which has an integrated 3-stop ND filter. Additionally, the PowerShot G1X Mark III features Canon's Dual Sensing IS system which works with the lens' optical image stabilization to achieve up to a 4-stop equivalence in image stabilization.

If you recall, the G1X Mark II had a 24-120mm f/2.0-3.9 lens. Canon decided to make a trade-off with the G1X Mark III: bigger sensor, but with a shorter and slower lens.

New Feature: In-Camera Panoramas

Though some previous PowerShots had a panorama "stitch assist" feature, the Canon G1 X Mark III introduces in-camera stitching. Move the camera either vertically or horizontally in this mode, capture multiple frames and the G1X III will automatically stitch the images together in camera for a complete panorama.

The Canon G1X III is a Camera Designed to be Used

Canon packed a lot of features and design decisions into the G1X Mark III that make it clear that they intend the camera to withstand the daily grind of actual use. It is both dust and water resistant (no IP rating, but there is some weather sealing), and it's compact size and vari-angle LCD make it ideal for getting into hard-to-reach places and shoot tough angles.

The viewfinder is a 2.36 million dot Organic LED EVF that provides customization options for nearly any shooting style or scene. The touchscreen LCD allows for tap or drag autofocus for a more intuitive experience in combination with the EVF. You can use the EVF and touch panel together to adjust focus targeting without looking away from the viewfinder, or you can use Smooth Zone AF to track subjects by tapping the screen. We expect it to work like this: you look through the EVF and use your thumb or finger to move the autofocus point to rack focus. When setting the camera up, you can select only a portion of the screen to function as the touch-and-drag area, or you can have the entire screen work like this. Though it will take time with the camera to see how well this system works, the description of what to expect is rather enticing.

The aforementioned tilt screen is a 3.0-inch vari-angle touch LCD monitor that is just the latest camera to receive this treatment. The same monitor can be found on many other Canon cameras and works well to give you multiple angles of view from any side of the camera, not just high or low angle shots. It's far more versatile than other designs, but the only downside occurs if you want to see the screen while using it. Instead of a more natural eyeline that the flip-up tilt screens give, the vari-angle will force your eye right of the lens, which can be less ideal for vlogging or selfies.

The G1X Mark III weighs 399 grams versus 553 grams for the G1X Mark II. It's lighter, because the form factor is smaller than the G1X Mark II. It is a mixed metal and plastic construction, and you might notice that the dials and controls look similar to the G5X. It has the same control ring on the front, exposure compensation dial and a main control on the back of the camera. According to Canon, it will feel like you're holding a DSLR.

Canon took time to tout a new shutter release, which they say "offers a sophisticated sense of operation, similar to high-end EOS models" that is apparently very comfortable to hold during continuous shooting. We'll dive deeper into this feature when we have a chance to test the camera for ourselves.

DIGIC 7 Processor

The G1X Mark III not only shares the same sensor as the EOS M5, but also the same DIGIC 7 processor. That is a considerable amount of processing power packed into a small camera body. The processor allows the G1X III to offer improved face detection, better subject and scene detection, and better high ISO performance than its predecessor.

The camera can also fire quite fast according to Canon. In single-shot AF mode, the G1X Mark III is capable of 9 frames per second. In Servo AF mode, that number falls just slightly to 7 frames per second.

So while the optic may not be as fast as the G1X Mark II, the other tech in the camera should make up for it, and then some.

Adds Bluetooth Connectivity

The G1X Mark III can connect to a multitude of smart devices through Wi-Fi, NFC and now Bluetooth, which facilitates easy sharing and access to images while on a mobile device. Use of these wireless features requires the Canon Camera Connect app, just like the rest of the Canon cameras with these wireless features.

Video: Continues Canon's trend to only offer Full HD

Though it disappointingly does not offer 4K video recording, it does have the same video quality found in the 80D, with 1080p Full HD at up to 60 frames per second. Canon's video autofocus should also be excellent, thanks to the Dual Pixel sensor. The aforementioned 5-axis mix of digital and lens IS will also help reduce the effect of camera shake when shooting handheld.

The G1X Mark III also offers a movie time-lapse mode, which is the same feature that Canon users will be familiar with in most modern Canon DSLRs. Canon says that the settings for creating a time-lapse are intuitive and easy to use, and let you quickly determine intervals and exposure.

Canon G1 X III Pricing and Availability

The Canon PowerShot G1 X Mark III is scheduled to start shipping in November 2017 for an estimated retail price of US$1299.00. In addition the Canon Lens Hood LH-DC110, Waterproof Case WP-DC56 and Deluxe Leather Case PSC-6300 for the PowerShot G1 X Mark III will be available for an estimated retail price of US$59.99, US$499.99 and US$99.99 respectively.


Canon G1X Mark III Field Test Part I

APS-C sensor brings pros and cons to this new compact PowerShot

by Jeremy Gray |

The PowerShot G1X Mark III represents a pair of firsts for Canon's compact camera category. For one, the G1X III is Canon's first compact camera to use an APS-C sensor, and secondly, it's the first PowerShot to include Dual Pixel CMOS autofocus technology. These are significant changes to the G1X series design. How does the Mark III perform?

Camera Body and Design
The G1X Mark III is not only quite different on the inside when compared to its predecessor, but it also looks considerably different, sharing some similarities to the PowerShot G5X. The G1X III has a built-in electronic viewfinder, for starters, which results in a new protrusion on the top of the camera. The G1X III is compact but offers a good amount of physical controls. There's a front command dial and a second rotating dial surrounding the directional pad on the rear of the camera, as well as a dedicated movie record button and an exposure compensation dial. Despite having a larger sensor and an EVF, the G1X III is lighter than its predecessor, weighing in at 14 ounces (399 grams) versus 1.2 pounds (553 grams).

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