• APS-C 372.1mm2
  • 16.3 megapixels
  • ISO 100 - 12,800
  • APS-C 369.7mm2
  • 16.1 megapixels
  • ISO 100 - 16,000

Buy From

Differences

Pentax K-5 advantages over Sony A57

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Higher effective ISO
    1,162 vs 785 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 740 vs 550 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More cross-type AF points
    9 vs 3
    Cross-type AF points improve autofocus performance
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Sony A57 advantages over Pentax K-5

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • More viewfinder magnification
    0.69x vs 0.61x
    Get a bigger view of the scene through the eye-level viewfinder
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • More AF points
    15 vs 11
    More AF points improve autofocus
  • Faster JPEG shooting
    10.0 fps vs 6.5 fps
    Faster JPEG shooting (burst mode)

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
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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
  • 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

Buy From

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 Nikon D7000

Pentax K-5
Nikon D7000
  • $774
  • APS-C
  • In-Camera Image Stabilization
  • Less shutter lag
  • $699
  • APS-C
  • Fast startup
  • Longer stills battery life
Sony A57
Nikon D7000
  • $800
  • APS-C
  • Less expensive
  • Focus peaking
  • $699
  • APS-C
  • Lens selection
  • Higher effective ISO

Compared to Canon T3i

Pentax K-5
Canon T3i
  • $774
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
  • $549
  • APS-C
  • Tilt-swivel screen
  • More telephoto lens reach
Sony A57
Canon T3i
  • $800
  • APS-C
  • Focus peaking
  • Larger sensor
  • $549
  • APS-C
  • Lens selection
  • Less expensive

Compared to Nikon D5100

Pentax K-5
Nikon D5100
  • $774
  • APS-C
  • In-Camera Image Stabilization
  • Top deck display
  • $499
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Sony A57
Nikon D5100
  • $800
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $499
  • APS-C
  • Lens selection
  • Tilt-swivel screen

Compared to Sony A37

Pentax K-5
Sony A37
  • $774
  • APS-C
  • Lens selection
  • Fast startup
  • $600
  • APS-C
  • Focus peaking
  • In-camera panoramas
Sony A57
Sony A37
  • $800
  • APS-C
  • Longer stills battery life
  • Higher-res screen
  • $600
  • APS-C
  • Less expensive
  • External Mic Jack

Compared to Pentax K-5 IIs

Pentax K-5
Pentax K-5 IIs
  • $774
  • APS-C
  • Less shutter lag
  • Has anti-aliasing filter
  • $673
  • APS-C
  • Less expensive
  • Lacks anti-aliasing filter
Sony A57
Pentax K-5 IIs
  • $800
  • APS-C
  • Focus peaking
  • In-camera panoramas
  • $673
  • APS-C
  • Lens selection
  • Higher effective ISO
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