• APS-C 372.1mm2
  • 16.3 megapixels
  • ISO 100 - 12,800
  • 35mm 855.6mm2
  • 24.3 megapixels
  • ISO 100 - 25,600

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Differences

Pentax K-5 advantages over Sony A99

  • Less expensive
    $1750 vs $2800 (MSRP)
    Save money for lenses or accessories
  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Longer stills battery life
    More info 740 vs 500 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • More cross-type AF points
    9 vs 3
    Cross-type AF points improve autofocus performance
  • Bigger JPEG buffer
    31 vs 17 shots
    Take more JPEG shots before waiting (burst mode)

Sony A99 advantages over Pentax K-5

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • Bigger pixels
    ~ 5.97 vs 4.81 microns
    Better low-light and dynamic range (all else equal)
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Higher effective ISO
    1,555 vs 1,162 iso
    Take photos in low light with less noise
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • More viewfinder magnification
    0.71x vs 0.61x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    24.3 vs 16.3 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • More AF points
    19 vs 11
    More AF points improve autofocus
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • Top deck display
    Both provide
    Check settings with a screen on top of the camera
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • 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
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Your purchases support this site

Buy the Pentax K-5

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 Canon T3i

Pentax K-5
Canon T3i
  • $800
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
  • $549
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Sony A99
Canon T3i
  • $1998
  • 35mm
  • Focus peaking
  • Larger sensor
  • $549
  • APS-C
  • Less expensive
  • Lens selection

Compared to Nikon D5100

Pentax K-5
Nikon D5100
  • $800
  • APS-C
  • In-Camera Image Stabilization
  • Top deck display
  • $650
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Sony A99
Nikon D5100
  • $1998
  • 35mm
  • Focus peaking
  • Larger sensor
  • $650
  • APS-C
  • Lens selection
  • Less expensive

Compared to Nikon D800

Pentax K-5
Nikon D800
  • $800
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization
  • $1850
  • 35mm
  • Larger sensor
  • Fast startup
Sony A99
Nikon D800
  • $1998
  • 35mm
  • Tilt-swivel screen
  • Focus peaking
  • $1850
  • 35mm
  • Lens selection
  • Fast startup

Compared to Canon 5D Mark III

Pentax K-5
Canon 5D Mark III
  • $800
  • APS-C
  • In-Camera Image Stabilization
  • More dynamic range
  • $2079
  • 35mm
  • Larger sensor
  • Bigger pixels
Sony A99
Canon 5D Mark III
  • $1998
  • 35mm
  • Focus peaking
  • Tilt-swivel screen
  • $2079
  • 35mm
  • Lens selection
  • Fast startup

Compared to Pentax K-30

Pentax K-5
Pentax K-30
  • $800
  • APS-C
  • Fast startup
  • Longer stills battery life
  • $599
  • APS-C
  • Less expensive
  • Focus peaking
Sony A99
Pentax K-30
  • $1998
  • 35mm
  • Tilt-swivel screen
  • Larger sensor
  • $599
  • APS-C
  • Less expensive
  • Lens selection
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