• APS-C 369.0mm2
  • 14.8 megapixels
  • ISO 100 - 6400
  • APS-C 337.5mm2
  • 32.5 megapixels
  • ISO 100 - 25,600

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Differences

Sigma SD1 Merrill advantages over Canon 90D

  • Bigger pixels
    ~ 5.00 vs 3.23 microns
    Better low-light and dynamic range (all else equal)
  • Doesn't require an AA filter
    Yes vs No
    A unique sensor design provides sharp photos without moiré
  • Wider angle kit lens
    26 mm vs 29 mm
    Capture more of the scene with the included lens

Canon 90D advantages over Sigma SD1 Merrill

  • Lens selection
    Excellent vs Limited
    Better lens selection gives you more options
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • 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
  • Fast startup
    ~0.40 vs 4.5 sec
    Faster startup lets you catch the moment
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • 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
  • More telephoto lens reach
    216 mm vs 75 mm
    Capture objects farther away with the kit lens
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More cross-type AF points
    45 vs 1
    Cross-type AF points improve autofocus performance
  • Newer
    5 years vs 13 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
  • More dots on screen
    1040k vs 460k dots
    Can mean greater resolution or a brighter screen
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • Less shutter lag
    0.13 vs 0.38 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    32.5 vs 14.8 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • More AF points
    45 vs 11
    More AF points improve autofocus
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Faster JPEG shooting
    10.0 fps vs 4.1 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    57 vs 7 shots
    Take more JPEG shots before waiting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/16000 vs 1/8000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • Pentaprism viewfinder
    Both provide
    Much better viewfinder picture fidelity
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Focus peaking
    Neither provide
    Your camera will highlight what's in focus
  • In-Camera Image Stabilization
    Neither provide
    Reduces the effects of camera shake at slower shutter speeds
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Dual card slots
    Neither provide
    Gives you more storage flexibility

User reviews

Buy From

Your purchases support this site

Buy the Sigma SD1 Merrill

Your purchases support this site

Buy the Canon 90D

Review Excerpt

  • Highest resolution Canon APS-C camera yet; Great image quality; Faster 10fps burst shooting; Very fast autofocus; Dual Pixel CMOS AF in Live View; 4K video; 1080p120 slow-mo video.

  • Low-pass filter reduces fine detail from high-res sensor; High ISO performance isn't as good as some rival cameras; Video recording limited to 29:59.

The Competition

Compared to Canon 50D

Sigma SD1 Merrill
Canon 50D
  • $8492
  • APS-C
  • Doesn't require an AA filter
  • Wider angle kit lens
  • $1000
  • APS-C
  • Lens selection
  • Less expensive
Canon 90D
Canon 50D
  • $1099
  • APS-C
  • Tilt-swivel screen
  • Shoot 4K video
  • $1000
  • APS-C
  • Bigger pixels
  • Fast startup

Compared to Nikon D300S

Sigma SD1 Merrill
Nikon D300S
  • $8492
  • APS-C
  • More pixels
  • Doesn't require an AA filter
  • $1697
  • APS-C
  • Lens selection
  • Fast startup
Canon 90D
Nikon D300S
  • $1099
  • APS-C
  • Less expensive
  • Tilt-swivel screen
  • $1697
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Nikon D500

Sigma SD1 Merrill
Nikon D500
  • $8492
  • APS-C
  • Bigger pixels
  • Internal flash
  • $1598
  • APS-C
  • Lens selection
  • Shoot 4K video
Canon 90D
Nikon D500
  • $1099
  • APS-C
  • Less expensive
  • Tilt-swivel screen
  • $1598
  • APS-C
  • Bigger pixels
  • Fast startup

Compared to Canon 80D

Sigma SD1 Merrill
Canon 80D
  • $8492
  • APS-C
  • Bigger pixels
  • Doesn't require an AA filter
  • $935
  • APS-C
  • Tilt-swivel screen
  • Lens selection
Canon 90D
Canon 80D
  • $1099
  • APS-C
  • Shoot 4K video
  • Built-in Bluetooth
  • $935
  • APS-C
  • Less expensive
  • Bigger pixels

Compared to Nikon D7500

Sigma SD1 Merrill
Nikon D7500
  • $8492
  • APS-C
  • Bigger pixels
  • Doesn't require an AA filter
  • $864
  • APS-C
  • Lens selection
  • Shoot 4K video
Canon 90D
Nikon D7500
  • $1099
  • APS-C
  • Tilt-swivel screen
  • On-sensor phase detect
  • $864
  • APS-C
  • Less expensive
  • Bigger pixels
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