• APS-C 369.0mm2
  • 14.8 megapixels
  • 75.00mm (35mm eq.)
  • 35mm 861.6mm2
  • 42.4 megapixels
  • ISO 100 - 32,000

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Differences

Sigma DP3 Merrill advantages over Sony A7R III

  • Less expensive
    $899* vs $3596
    Save money for lenses or accessories
  • Lighter weight
    400g vs 657g
    Lighter weight
  • Doesn't require an AA filter
    Yes vs No
    A unique sensor design provides sharp photos without moiré

Sony A7R III advantages over Sigma DP3 Merrill

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Shoot 4K video
    4K (UHD) vs No
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • 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
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 650 vs 97 shots
    Capture more photos
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Newer
    12 months vs 6 years old
    Newer cameras often support more advanced features
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • 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 pixels
    42.4 vs 14.8 megapixels
    Higher resolution photos
  • 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
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Faster JPEG shooting
    9.9 fps vs 4.0 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    82 vs 7 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    9.2 fps vs 4.0 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    30 vs 7 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/8000 vs 1/2000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    102400 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • 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
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter

User reviews

Buy From

Your purchases support this site

Buy the Sony A7R III

Review Excerpt

  • Fantastic image quality; Improved dynamic range over its predecessor; Very good high ISO performance; Much improved real-world AF performance; Class-leading burst rates, even with RAW; Improved 5-axis in-body image stabilization; Better 4K video quality; 1080/120fps video; Dual card slots; Significantly better battery life.

  • Expensive; Menus still confusing; UHS-II support only on one card slot; No optical low-pass filter means greater risk of moire; No built-in flash; Buffer clearing still slow despite UHS-II support.

The Competition

Compared to Sony A7R II

Sigma DP3 Merrill
Sony A7R II
  • $899
  • APS-C
  • Less expensive
  • Lighter weight
  • $1598
  • 35mm
  • Focus peaking
  • Larger sensor
Sony A7R III
Sony A7R II
  • $2798
  • 35mm
  • Touchscreen
  • High resolution composite
  • $1598
  • 35mm
  • Less expensive
  • In-camera panoramas

Compared to Sony A9

Sigma DP3 Merrill
Sony A9
  • $899
  • APS-C
  • Less expensive
  • Lighter weight
  • $3498
  • 35mm
  • Focus peaking
  • Larger sensor
Sony A7R III
Sony A9
  • $2798
  • 35mm
  • High resolution composite
  • More dynamic range
  • $3498
  • 35mm
  • Bigger pixels
  • Fast startup

Compared to Nikon Z7

Sigma DP3 Merrill
Nikon Z7
  • $899
  • APS-C
  • Less expensive
  • Doesn't require an AA filter
  • $3397
  • 35mm
  • Focus peaking
  • Larger sensor
Sony A7R III
Nikon Z7
  • $2798
  • 35mm
  • High resolution composite
  • NFC
  • $3397
  • 35mm
  • Top deck display
  • More dots on screen

Compared to Canon EOS R

Sigma DP3 Merrill
Canon EOS R
  • $899
  • APS-C
  • Less expensive
  • Lighter weight
  • $2299
  • 35mm
  • Focus peaking
  • Larger sensor
Sony A7R III
Canon EOS R
  • $2798
  • 35mm
  • In-Camera Image Stabilization
  • High resolution composite
  • $2299
  • 35mm
  • Tilt-swivel screen
  • Bigger pixels

Compared to Fujifilm GFX 50R

Sigma DP3 Merrill
Fujifilm GFX 50R
  • $899
  • APS-C
  • Less expensive
  • Lighter weight
  • $4499
  • Medium format
  • Focus peaking
  • Larger sensor
Sony A7R III
Fujifilm GFX 50R
  • $2798
  • 35mm
  • Less expensive
  • In-Camera Image Stabilization
  • $4499
  • Medium format
  • Larger sensor
  • Bigger pixels
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