• APS-C 366.6mm2
  • 24.3 megapixels
  • ISO 100 - 25,600
  • APS-C 361.2mm2
  • 25.7 megapixels
  • ISO 100 - 1,600,000

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Differences

Sony A77 II advantages over Pentax K-3 III

  • Less expensive
    $1798 vs $2344
    Save money for lenses or accessories
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash

Pentax K-3 III advantages over Sony A77 II

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Shoot 4K video
    4K (UHD) vs 1080p
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Longer stills battery life
    More info 800 vs 480 shots
    Capture more photos
  • More cross-type AF points
    25 vs 15
    Cross-type AF points improve autofocus performance
  • Newer
    6 months vs 7 years old
    Newer cameras often support more advanced features
  • Higher-res screen
    540k vs 307k pixels
    More detail on the screen lets you judge focus and composition
  • More viewfinder magnification
    1.05x vs 0.73x
    Get a bigger view of the scene through the eye-level viewfinder
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • 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
  • Higher extended ISO
    1600000 vs 51200 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • 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
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • 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

  • 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

Buy From

Your purchases support this site

Buy the Pentax K-3 III

Review Excerpt

  • Excellent image quality, especially lower ISOs; Improved high ISO performance when using RAW; Very good dynamic range; High-resolution images; Very fast single-shot autofocus; 12fps burst mode with C-AF; Good value for its class.

  • Lackluster continuous AF performance; Strong NR processing in high ISO JPEGs; Sluggish buffer clearing; Short battery life compared to most DSLRs; Joystick control easy to press accidentally.

The Competition

Compared to Canon 70D

Sony A77 II
Canon 70D
  • $1198
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $999
  • APS-C
  • Lens selection
  • Less expensive
Pentax K-3 III
Canon 70D
  • $1997
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $999
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Canon 7D Mark II

Sony A77 II
Canon 7D Mark II
  • $1198
  • APS-C
  • Focus peaking
  • Tilt-swivel screen
  • $1649
  • APS-C
  • Lens selection
  • Fast startup
Pentax K-3 III
Canon 7D Mark II
  • $1997
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1649
  • APS-C
  • Less expensive
  • On-sensor phase detect

Compared to Nikon D7200

Sony A77 II
Nikon D7200
  • $1198
  • APS-C
  • Tilt-swivel screen
  • Focus peaking
  • $1097
  • APS-C
  • Lens selection
  • Fast startup
Pentax K-3 III
Nikon D7200
  • $1997
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1097
  • APS-C
  • Less expensive
  • NFC

Compared to Pentax KP

Sony A77 II
Pentax KP
  • $1198
  • APS-C
  • Tilt-swivel screen
  • In-camera panoramas
  • $999
  • APS-C
  • Lens selection
  • Less expensive
Pentax K-3 III
Pentax KP
  • $1997
  • APS-C
  • Shoot 4K video
  • Touchscreen
  • $999
  • APS-C
  • Less expensive
  • Tiltable Screen

Compared to Canon 90D

Sony A77 II
Canon 90D
  • $1198
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1199
  • APS-C
  • Lens selection
  • Less expensive
Pentax K-3 III
Canon 90D
  • $1997
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1199
  • APS-C
  • Less expensive
  • Tilt-swivel screen
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