• APS-H 525.5mm2
  • 10.1 megapixels
  • ISO 100 - 3200
  • APS-C 332.3mm2
  • 18.0 megapixels
  • ISO 100 - 6400

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Differences

Canon 1D Mark III advantages over Canon 7D

  • Larger sensor
    APS-H vs APS-C
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 7.23 vs 4.30 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.10 vs 0.4 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    1,078 vs 854 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 2200 vs 800 shots
    Capture more photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Faster JPEG shooting
    9.9 fps vs 8.0 fps
    Faster JPEG shooting (burst mode)

Canon 7D advantages over Canon 1D Mark III

  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Pentaprism viewfinder
    Pentaprism vs Pentamirror
    Much better viewfinder picture fidelity
  • 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
    922k vs 230k dots
    Can mean greater resolution or a brighter screen
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More viewfinder magnification
    0.63x vs 0.58x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    18.0 vs 10.1 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Bigger JPEG buffer
    22 vs 12 shots
    Take more JPEG shots before waiting (burst mode)
  • Higher extended ISO
    12800 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
  • Top deck display
    Both provide
    Check settings with a screen on top of the camera
  • 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
  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • In-Camera Image Stabilization
    Neither provide
    Reduces the effects of camera shake at slower shutter speeds
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Your purchases support this site

Review Excerpt

  • Excellent 18-megapixel sensor with impressively low noise and superb detail; Very good high ISO performance, especially for 18-megapixel subframe sensor; Rugged construction with magnesium body and weather sealing; Fast autofocus and fast burst rate of 8 fps; Full HD (1920x1080) movies at 30/25/24p, 60/50p at 1280x720.

  • No dedicated AF-assist lamp (flash is used), and AF-assist adjustment is buried in the Flash Settings menu; Kit lens (28-135mm) isn't quite up to the resolving power of the 18-megapixel sensor, odd focal length for subframe DSLR; No continuous autofocus in Movie mode.

The Competition

Compared to Canon 7D Mark II

Canon 1D Mark III
Canon 7D Mark II
  • $4500
  • APS-H
  • Larger sensor
  • Bigger pixels
  • $1647
  • APS-C
  • Built-in GPS
  • On-sensor phase detect
Canon 7D
Canon 7D Mark II
  • $1499
  • APS-C
  • Less expensive
  • Less shutter lag
  • $1647
  • APS-C
  • Higher effective ISO
  • Built-in GPS

Compared to Nikon D90

Canon 1D Mark III
Nikon D90
  • $4500
  • APS-H
  • Larger sensor
  • Bigger pixels
  • $1300
  • APS-C
  • Less expensive
  • Internal flash
Canon 7D
Nikon D90
  • $1499
  • APS-C
  • More telephoto lens reach
  • External Mic Jack
  • $1300
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Canon 60D

Canon 1D Mark III
Canon 60D
  • $4500
  • APS-H
  • Larger sensor
  • Bigger pixels
  • $889
  • APS-C
  • Tilt-swivel screen
  • Internal flash
Canon 7D
Canon 60D
  • $1499
  • APS-C
  • More cross-type AF points
  • Less shutter lag
  • $889
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Nikon D7000

Canon 1D Mark III
Nikon D7000
  • $4500
  • APS-H
  • Larger sensor
  • Bigger pixels
  • $699
  • APS-C
  • Less expensive
  • More dynamic range
Canon 7D
Nikon D7000
  • $1499
  • APS-C
  • More telephoto lens reach
  • More cross-type AF points
  • $699
  • APS-C
  • Larger sensor
  • Higher effective ISO

Compared to Sony A77

Canon 1D Mark III
Sony A77
  • $4500
  • APS-H
  • Lens selection
  • Larger sensor
  • $1899
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Canon 7D
Sony A77
  • $1499
  • APS-C
  • Lens selection
  • Fast startup
  • $1899
  • APS-C
  • Tilt-swivel screen
  • Focus peaking
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