• 35mm 864.0mm2
  • 21.1 megapixels
  • ISO 100 - 1600
  • APS-C 366.6mm2
  • 24.4 megapixels
  • ISO 100 - 51,200

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Differences

Canon 1Ds Mark III advantages over Pentax K-3 II

  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 6.41 vs 3.91 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.50 vs 1.2 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    1,663 vs 1,106 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 1800 vs 720 shots
    Capture more photos
  • More viewfinder magnification
    0.75x vs 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • More AF points
    45 vs 27
    More AF points improve autofocus

Pentax K-3 II advantages over Canon 1Ds Mark III

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • More dynamic range
    13.6 vs 12.0 evs
    Retain detail in highlight and shadows
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More cross-type AF points
    25 vs 19
    Cross-type AF points improve autofocus performance
  • Newer
    4 years vs 11 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
  • Lighter weight
    785g vs 1425g
    Lighter weight
  • More dots on screen
    1037k 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 pixels
    24.4 vs 21.1 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Optional anti-aliasing filter
    Optional vs Fixed
    Lets you choose sharper photos or reduced moiré
  • Faster JPEG shooting
    8.1 fps vs 5.0 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    60 vs 8 shots
    Take more JPEG shots before waiting (burst mode)
  • Higher extended ISO
    51200 vs 3200 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
  • Pentaprism viewfinder
    Both provide
    Much better viewfinder picture fidelity
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Dual card slots
    Both provide
    Gives you more storage flexibility
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • 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
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Your purchases support this site

Review Excerpt

  • Top-notch image quality; Spectacular detail from Pixel Shift Resolution; Better performance than K-3; Geotag images with no accessories; Great ergonomics in a compact body; Clever on-demand low-pass filtering; Broad sensitivity range; Large and bright viewfinder for an APS-C camera; Dual card slots

  • No built-in flash strobe; No wireless flash support out of the box; AstroTracer function can be finicky; AE Lock button is poorly located; Below-average battery life for a prosumer DSLR; Requires a different battery grip accessory than its predecessors

The Competition

Compared to Nikon D5500

Canon 1Ds Mark III
Nikon D5500
  • $7999
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $597
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
Pentax K-3 II
Nikon D5500
  • $797
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $597
  • APS-C
  • Tilt-swivel screen
  • Touchscreen

Compared to Canon T6i

Canon 1Ds Mark III
Canon T6i
  • $7999
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $549
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
Pentax K-3 II
Canon T6i
  • $797
  • APS-C
  • Focus peaking
  • Larger sensor
  • $549
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Sony A68

Canon 1Ds Mark III
Sony A68
  • $7999
  • 35mm
  • Lens selection
  • Larger sensor
  • $598
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
Pentax K-3 II
Sony A68
  • $797
  • APS-C
  • Lens selection
  • High resolution composite
  • $598
  • APS-C
  • In-camera panoramas
  • Tiltable Screen

Compared to Pentax KP

Canon 1Ds Mark III
Pentax KP
  • $7999
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $797
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
Pentax K-3 II
Pentax KP
  • $797
  • APS-C
  • Built-in GPS
  • Longer stills battery life
  • $797
  • APS-C
  • Tiltable Screen
  • Built-in Wi-Fi

Compared to Canon T7i

Canon 1Ds Mark III
Canon T7i
  • $7999
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $699
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
Pentax K-3 II
Canon T7i
  • $797
  • APS-C
  • Focus peaking
  • Larger sensor
  • $699
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
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