• APS-H 525.5mm2
  • 10.1 megapixels
  • ISO 100 - 3200
  • APS-C 372.1mm2
  • 16.3 megapixels
  • ISO 100 - 51,200

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Differences

Canon 1D Mark III advantages over Pentax K-500

  • Larger sensor
    APS-H vs APS-C
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 7.23 vs 4.81 microns
    Better low-light and dynamic range (all else equal)
  • Longer stills battery life
    More info 2200 vs 710 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • More cross-type AF points
    19 vs 9
    Cross-type AF points improve autofocus performance
  • Higher max flash sync
    1/300 vs 1/180 sec
    Reduce the effect of ambient light in flash shots
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • More AF points
    19 vs 11
    More AF points improve autofocus
  • Faster JPEG shooting
    9.9 fps vs 6.0 fps
    Faster JPEG shooting (burst mode)

Pentax K-500 advantages over Canon 1D 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
  • More dynamic range
    13.1 vs 11.7 evs
    Retain detail in highlight and shadows
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Pentaprism viewfinder
    Pentaprism vs Pentamirror
    Much better viewfinder picture fidelity
  • Newer
    5 years vs 12 years old
    Newer cameras often support more advanced features
  • 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 pixels
    16.3 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
    30 vs 12 shots
    Take more JPEG shots before waiting (burst mode)
  • 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
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • 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
  • 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
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • HDMI out
    Neither provide
    Use HDMI output to monitor or review video
  • 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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Buy the Pentax K-500

Review Excerpt

The Competition

Compared to Sony A57

Canon 1D Mark III
Sony A57
  • $4500
  • APS-H
  • Lens selection
  • Larger sensor
  • $800
  • APS-C
  • Less expensive
  • Focus peaking
Pentax K-500
Sony A57
  • $597
  • APS-C
  • Lens selection
  • Higher effective ISO
  • $800
  • APS-C
  • In-camera panoramas
  • Tiltable Screen

Compared to Pentax K-5 IIs

Canon 1D Mark III
Pentax K-5 IIs
  • $4500
  • APS-H
  • Larger sensor
  • Bigger pixels
  • $673
  • APS-C
  • In-Camera Image Stabilization
  • Higher effective ISO
Pentax K-500
Pentax K-5 IIs
  • $597
  • APS-C
  • Focus peaking
  • Shoots 24p video
  • $673
  • APS-C
  • Less expensive
  • Higher effective ISO

Compared to Sony A58

Canon 1D Mark III
Sony A58
  • $4500
  • APS-H
  • Lens selection
  • Larger sensor
  • $598
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
Pentax K-500
Sony A58
  • $597
  • APS-C
  • Lens selection
  • Higher effective ISO
  • $598
  • APS-C
  • In-camera panoramas
  • Tiltable Screen

Compared to Canon T5i

Canon 1D Mark III
Canon T5i
  • $4500
  • APS-H
  • Larger sensor
  • Bigger pixels
  • $539
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
Pentax K-500
Canon T5i
  • $597
  • APS-C
  • Focus peaking
  • Larger sensor
  • $539
  • APS-C
  • Tilt-swivel screen
  • Touchscreen

Compared to Pentax K-50

Canon 1D Mark III
Pentax K-50
  • $4500
  • APS-H
  • Larger sensor
  • Bigger pixels
  • $458
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
Pentax K-500
Pentax K-50
  • $597
  • APS-C
  • Longer stills battery life
  • $458
  • APS-C
  • Less expensive
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