• APS-C 364.3mm2
  • 19.6 megapixels
  • ISO 100 - 6400
  • 35mm 847.3mm2
  • 12.1 megapixels
  • ISO 80 - 102,400

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Differences

Sigma sd Quattro advantages over Sony A7S III

  • Less expensive
    $899 vs $3198*
    Save money for lenses or accessories
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • More pixels
    19.6 vs 12.1 megapixels
    Higher resolution photos

Sony A7S III advantages over Sigma sd Quattro

  • Lens selection
    Good vs Limited
    Better lens selection gives you more options
  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 8.40 vs 4.33 microns
    Better low-light and dynamic range (all else equal)
  • Shoot 4K video
    No vs No
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Thinner
    69 mm vs 90 mm
    Thinner
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Newer
    4 years vs 8 years old
    Newer cameras often support more advanced features
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More viewfinder magnification
    0.90x vs 0.73x
    Get a bigger view of the scene through the eye-level viewfinder
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    409600 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

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
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

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

The Competition

Compared to Sony A3000

Sigma sd Quattro
Sony A3000
  • $699
  • APS-C
  • On-sensor phase detect
  • HDMI out
  • $500
  • APS-C
  • Lens selection
  • In-camera panoramas
Sony A7S III
Sony A3000
  • $3348
  • 35mm
  • Tilt-swivel screen
  • Larger sensor
  • $500
  • APS-C
  • Internal flash
  • More pixels

Compared to Sigma sd Quattro H

Sigma sd Quattro
Sigma sd Quattro H
  • $699
  • APS-C
  • Bigger RAW buffer
  • $1199
  • APS-H
  • Larger sensor
  • More pixels
Sony A7S III
Sigma sd Quattro H
  • $3348
  • 35mm
  • Lens selection
  • Larger sensor
  • $1199
  • APS-H
  • On-sensor phase detect
  • More pixels

Compared to Fujifilm X-H1

Sigma sd Quattro
Fujifilm X-H1
  • $699
  • APS-C
  • More dots on screen
  • $1199
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization
Sony A7S III
Fujifilm X-H1
  • $3348
  • 35mm
  • Tilt-swivel screen
  • Slower slow-motion
  • $1199
  • APS-C
  • Less expensive
  • On-sensor phase detect

Compared to Sony A9 II

Sigma sd Quattro
Sony A9 II
  • $699
  • APS-C
  • Less expensive
  • Doesn't require an AA filter
  • $4498
  • 35mm
  • Lens selection
  • Larger sensor
Sony A7S III
Sony A9 II
  • $3348
  • 35mm
  • Less expensive
  • Tilt-swivel screen
  • $4498
  • 35mm
  • On-sensor phase detect
  • More pixels

Compared to Canon R6

Sigma sd Quattro
Canon R6
  • $699
  • APS-C
  • Less expensive
  • Doesn't require an AA filter
  • $2149
  • 35mm
  • Tilt-swivel screen
  • Larger sensor
Sony A7S III
Canon R6
  • $3348
  • 35mm
  • Slower slow-motion
  • Bigger pixels
  • $2149
  • 35mm
  • Less expensive
  • On-sensor phase detect
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