• 35mm 847.3mm2
  • 24.2 megapixels
  • ISO 100 - 51,200
  • 35mm 858.0mm2
  • 33.0 megapixels
  • ISO 100 - 51,200

Buy From

Differences

Sony A9 advantages over Sony A7 IV

  • Bigger pixels
    ~ 5.93 vs 5.12 microns
    Better low-light and dynamic range (all else equal)
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Faster JPEG shooting
    20.0 fps vs 10.0 fps
    Faster JPEG shooting (burst mode)
  • Faster shutter
    1/32000 vs 1/8000 sec
    Shoot wide open in bright light

Sony A7 IV advantages over Sony A9

  • Tilt-swivel screen
    Tilt-swivel vs tilt-only
    Tilt and swivel the screen for maximum shooting flexibility
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Newer
    5 months vs 5 years old
    Newer cameras often support more advanced features
  • More dots on screen
    3680k vs 1440k dots
    Can mean greater resolution or a brighter screen
  • More pixels
    33.0 vs 24.2 megapixels
    Higher resolution photos
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Bigger JPEG buffer
    828 vs 364 shots
    Take more JPEG shots before waiting (burst mode)

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • Shoot 4K video
    Both provide
    Make sure you have a fast computer
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • NFC
    Both provide
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Both provide
    Always-on wireless connectivity
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Dual card slots
    Both provide
    Gives you more storage flexibility
  • Headphone jack
    Both provide
    Monitor audio recording while you shoot video
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures
  • Slow-motion videos
    Both provide
    Shoot slow-motion videos

Common Weaknesses

  • Built-in GPS
    Neither provide
    Geotag your photos
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera

User reviews

Buy From

Review Excerpt

  • 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 card slot is UHS-II compatible; Touchscreen underutilized; No lossless RAW compression option; No 4K/60p option.

The Competition

Compared to Leica SL (Typ 601)

Sony A9
Leica SL (Typ 601)
  • $3295
  • 35mm
  • In-Camera Image Stabilization
  • Tiltable Screen
  • $3802
  • 35mm
  • Built-in GPS
  • Top deck display
Sony A7 IV
Leica SL (Typ 601)
  • $2498
  • 35mm
  • Less expensive
  • Tilt-swivel screen
  • $3802
  • 35mm
  • Bigger pixels
  • Built-in GPS

Compared to Sony A7R III

Sony A9
Sony A7R III
  • $3295
  • 35mm
  • Bigger pixels
  • Fast startup
  • $2798
  • 35mm
  • High resolution composite
  • More dynamic range
Sony A7 IV
Sony A7R III
  • $2498
  • 35mm
  • Tilt-swivel screen
  • In-camera panoramas
  • $2798
  • 35mm
  • High resolution composite
  • On-sensor phase detect

Compared to Sony A9 II

Sony A9
Sony A9 II
  • $3295
  • 35mm
  • $4498
  • 35mm
  • Newer
Sony A7 IV
Sony A9 II
  • $2498
  • 35mm
  • Less expensive
  • Tilt-swivel screen
  • $4498
  • 35mm
  • Bigger pixels
  • On-sensor phase detect

Compared to Nikon Z7 II

Sony A9
Nikon Z7 II
  • $3295
  • 35mm
  • Bigger pixels
  • NFC
  • $2930
  • 35mm
  • Top deck display
  • Newer
Sony A7 IV
Nikon Z7 II
  • $2498
  • 35mm
  • Less expensive
  • Tilt-swivel screen
  • $2930
  • 35mm
  • On-sensor phase detect
  • Top deck display

Compared to Nikon Z6 II

Sony A9
Nikon Z6 II
  • $3295
  • 35mm
  • NFC
  • Longer video battery life
  • $1997
  • 35mm
  • Top deck display
  • Newer
Sony A7 IV
Nikon Z6 II
  • $2498
  • 35mm
  • Tilt-swivel screen
  • In-camera panoramas
  • $1997
  • 35mm
  • Bigger pixels
  • On-sensor phase detect
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