• APS-C 366.6mm2
  • 24.1 megapixels
  • ISO 100 - 6400
  • APS-C 361.2mm2
  • 25.7 megapixels
  • ISO 100 - 1,600,000

Buy From

Differences

Nikon D7100 advantages over Pentax K-3 III

  • Less expensive
    $849 vs $2344
    Save money for lenses or accessories
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash

Pentax K-3 III advantages over Nikon D7100

  • 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 15
    Cross-type AF points improve autofocus performance
  • Newer
    4 years vs 12 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 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • More AF points
    101 vs 51
    More AF points improve autofocus
  • Optional anti-aliasing filter
    Optional vs None
    Lets you choose sharper photos or reduced moiré
  • Faster JPEG shooting
    12.0 fps vs 5.8 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    30 vs 12 shots
    Take more JPEG shots before waiting (burst mode)
  • 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 D7100
Body Only
  • Body Only
  • Kit with 18-105mm Lens
  • Kit with 18-140mm Lens
All D7100 Deals

Your purchases support this site

Buy the Pentax K-3 III
Body Only
  • Body Only
  • Kit with 20-40mm F2.8-4 Lens
  • Kit with 55-300mm f/4.5-6.3 Lens
All K-3 III Deals

Review Excerpt

  • Solid, ergonomic body design; Stunning, highly detailed photos, thanks to 24.1MP sensor upgrade and removal of optical low-pass filter; Cool 1.3x crop mode extends reach to nearly 2x the full-frame equivalent; Records Full 1080p HD video at up to 30fps with full-time AF; Many pro-level features packed into a consumer-friendly body at reasonable price.

  • Shallow buffer that hampers continuous burst shooting; AF slightly slower than average for its class; No real-time aperture control while in Movie mode (among other quirks); More noticeable moire patterns and aliasing artifacts (but only found when shooting fabrics with strong, distinct patterns).

  • Read our Nikon D7100 Review

The Competition

Compared to Canon 70D

Nikon D7100
Canon 70D
  • $745
  • APS-C
  • Less expensive
  • Fast startup
  • $1149
  • APS-C
  • Tilt-swivel screen
  • Touchscreen

Compare Nikon D7100 vs Canon 70D

Pentax K-3 III
Canon 70D
  • $1847
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1149
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compare Pentax K-3 III vs Canon 70D

Compared to Pentax K-3

Nikon D7100
Pentax K-3
  • $745
  • APS-C
  • Fast startup
  • Longer stills battery life
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization

Compare Nikon D7100 vs Pentax K-3

Pentax K-3 III
Pentax K-3
  • $1847
  • APS-C
  • Shoot 4K video
  • Touchscreen
  • $699
  • APS-C
  • Internal flash
  • Bigger JPEG buffer

Compare Pentax K-3 III vs Pentax K-3

Compared to Nikon D7200

Nikon D7100
Nikon D7200
  • $745
  • APS-C
  • Less expensive
  • Fast startup
  • $1016
  • APS-C
  • Built-in Wi-Fi
  • NFC

Compare Nikon D7100 vs Nikon D7200

Pentax K-3 III
Nikon D7200
  • $1847
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1016
  • APS-C
  • Less expensive
  • NFC

Compare Pentax K-3 III vs Nikon D7200

Compared to Pentax KP

Nikon D7100
Pentax KP
  • $745
  • APS-C
  • Less expensive
  • Fast startup
  • $999
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization

Compare Nikon D7100 vs Pentax KP

Pentax K-3 III
Pentax KP
  • $1847
  • APS-C
  • Shoot 4K video
  • Touchscreen
  • $999
  • APS-C
  • Less expensive
  • Tiltable Screen

Compare Pentax K-3 III vs Pentax KP

Compared to Canon 90D

Nikon D7100
Canon 90D
  • $745
  • APS-C
  • Less expensive
  • Bigger pixels
  • $1099
  • APS-C
  • Tilt-swivel screen
  • Shoot 4K video

Compare Nikon D7100 vs Canon 90D

Pentax K-3 III
Canon 90D
  • $1847
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1099
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compare Pentax K-3 III vs Canon 90D

Compare Other Cameras?