• APS-C 369.7mm2
  • 10.1 megapixels
  • ISO 100 - 1600
  • APS-C 372.1mm2
  • 16.3 megapixels
  • ISO 100 - 12,800

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Differences

Canon 40D advantages over Pentax K-5

  • Bigger pixels
    ~ 6.10 vs 4.81 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.40 vs 0.6 sec
    Faster startup lets you catch the moment
  • Bigger JPEG buffer
    Unlimited vs 31 shots
    Take more JPEG shots before waiting (burst mode)

Pentax K-5 advantages over Canon 40D

  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Higher effective ISO
    1,162 vs 703 iso
    Take photos in low light with less noise
  • More dynamic range
    14.1 vs 11.3 evs
    Retain detail in highlight and shadows
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • 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
  • 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
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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
  • 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
  • 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
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • 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 high ISO performance, one of the best APS-C sensors yet; 6.5 fps burst mode has very good buffer depths; Weather, dust, and cold resistant; In-body Shake Reduction corrects not only horizontal / vertical, but also rotational motion.

  • Default saturation and contrast a bit high; Auto white balance too warm in tungsten light; Fewer AF points than main competitors; Only a single card slot, and no UHS-I card support (slow buffer clearing).

The Competition

Compared to Sony DSLR-A550

Canon 40D
Sony DSLR-A550
  • $1299
  • APS-C
  • Lens selection
  • Bigger pixels
  • $859
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization
Pentax K-5
Sony DSLR-A550
  • $774
  • APS-C
  • Lens selection
  • Higher effective ISO
  • $859
  • APS-C
  • Tiltable Screen
  • Longer stills battery life

Compared to Nikon D7000

Canon 40D
Nikon D7000
  • $1299
  • APS-C
  • Less expensive
  • Bigger pixels
  • $699
  • APS-C
  • Higher effective ISO
  • More dynamic range
Pentax K-5
Nikon D7000
  • $774
  • APS-C
  • In-Camera Image Stabilization
  • Less shutter lag
  • $699
  • APS-C
  • Fast startup
  • Longer stills battery life

Compared to Canon T3i

Canon 40D
Canon T3i
  • $1299
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $549
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Pentax K-5
Canon T3i
  • $774
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
  • $549
  • APS-C
  • Tilt-swivel screen
  • More telephoto lens reach

Compared to Nikon D5100

Canon 40D
Nikon D5100
  • $1299
  • APS-C
  • Bigger pixels
  • Longer stills battery life
  • $549
  • APS-C
  • Tilt-swivel screen
  • Higher effective ISO
Pentax K-5
Nikon D5100
  • $774
  • APS-C
  • In-Camera Image Stabilization
  • Top deck display
  • $549
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Pentax K-30

Canon 40D
Pentax K-30
  • $1299
  • APS-C
  • Bigger pixels
  • Fast startup
  • $562
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
Pentax K-5
Pentax K-30
  • $774
  • APS-C
  • Fast startup
  • Longer stills battery life
  • $562
  • APS-C
  • Less expensive
  • Focus peaking
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