• 35mm 861.6mm2
  • 24.3 megapixels
  • ISO 100 - 6400
  • APS-C 361.2mm2
  • 25.7 megapixels
  • ISO 100 - 1,600,000

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Differences

Nikon D610 advantages over Pentax K-3 III

  • Less expensive
    $1997 vs $2344
    Save money for lenses or accessories
  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 5.97 vs 3.76 microns
    Better low-light and dynamic range (all else equal)
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash

Pentax K-3 III advantages over Nikon D610

  • 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
  • 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 Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • More cross-type AF points
    25 vs 9
    Cross-type AF points improve autofocus performance
  • Newer
    4 years vs 11 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 0.70x
    Get a bigger view of the scene through the eye-level viewfinder
  • More AF points
    101 vs 39
    More AF points improve autofocus
  • Optional anti-aliasing filter
    Optional vs Fixed
    Lets you choose sharper photos or reduced moiré
  • Faster JPEG shooting
    12.0 fps vs 5.9 fps
    Faster JPEG shooting (burst mode)
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    1600000 vs 25600 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
  • 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
  • Pentaprism viewfinder
    Both provide
    Much better viewfinder picture fidelity
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Dual card slots
    Both provide
    Gives you more storage flexibility
  • Headphone jack
    Both provide
    Monitor audio recording while you shoot video
  • 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
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in GPS
    Neither provide
    Geotag your photos
  • 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 Nikon D610

Your purchases support this site

Buy the Pentax K-3 III

Review Excerpt

  • Eliminated sensor dust-and-oil spot issue from D600; Great controls for amateur or pro; Comfortable ergonomics and weight; Excellent image quality and low-light performance; Very good dynamic range; Excellent battery life; Built-in lens correction.

  • Not drastically different from D600; Moire with certain subjects; Auto WB still too warm in incandescent light; Slow AF in live view mode; Aliasing in videos.

The Competition

Compared to Canon 6D

Nikon D610
Canon 6D
  • $1198
  • 35mm
  • Fast startup
  • Higher effective ISO
  • $1699
  • 35mm
  • Built-in Wi-Fi
  • Built-in GPS
Pentax K-3 III
Canon 6D
  • $1847
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1699
  • 35mm
  • Less expensive
  • Larger sensor

Compared to Nikon D600

Nikon D610
Nikon D600
  • $1198
  • 35mm
  • Faster RAW shooting
  • $1900
  • 35mm
Pentax K-3 III
Nikon D600
  • $1847
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1900
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Nikon D750

Nikon D610
Nikon D750
  • $1198
  • 35mm
  • Fast startup
  • $1698
  • 35mm
  • Tiltable Screen
  • Built-in Wi-Fi
Pentax K-3 III
Nikon D750
  • $1847
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1698
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Pentax KP

Nikon D610
Pentax KP
  • $1198
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $999
  • APS-C
  • Focus peaking
  • Less expensive
Pentax K-3 III
Pentax KP
  • $1847
  • APS-C
  • Shoot 4K video
  • Touchscreen
  • $999
  • APS-C
  • Less expensive
  • Tiltable Screen

Compared to Canon 90D

Nikon D610
Canon 90D
  • $1198
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $1099
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Pentax K-3 III
Canon 90D
  • $1847
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1099
  • APS-C
  • Less expensive
  • Tilt-swivel screen
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