• APS-C 366.6mm2
  • 24.4 megapixels
  • ISO 100 - 51,200
  • 1 inch 116.2mm2
  • 18.4 megapixels
  • ISO 160 - 12,800

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Differences

Pentax K-3 advantages over Nikon J4

  • Lens selection
    Excellent vs Limited
    Better lens selection gives you more options
  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    APS-C vs 1 inch
    More sensor area. Bigger is (generally) better.
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 3.91 vs 2.52 microns
    Better low-light and dynamic range (all else equal)
  • Better color depth
    23.7 vs 20.8 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    1,216 vs 426 iso
    Take photos in low light with less noise
  • More dynamic range
    13.4 vs 10.7 evs
    Retain detail in highlight and shadows
  • Longer stills battery life
    More info 560 vs 300 shots
    Capture more photos
  • More telephoto lens reach
    203 mm vs 81 mm
    Capture objects farther away with the kit lens
  • 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
  • Higher max flash sync
    1/180 vs 1/60 sec
    Reduce the effect of ambient light in flash shots
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • More pixels
    24.4 vs 18.4 megapixels
    Higher resolution photos
  • 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 None
    Lets you choose sharper photos or reduced moiré
  • Higher extended ISO
    51200 vs 12800 ISO
    Higher extended ISO can give more low-light flexibility

Nikon J4 advantages over Pentax K-3

  • Less expensive
    $650 vs $1150 (MSRP)
    Save money for lenses or accessories
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Thinner
    28 mm vs 77 mm
    Thinner
  • Lighter weight
    317g vs 1240g
    Lighter weight
  • Faster JPEG shooting
    60.0 fps vs 7.1 fps
    Faster JPEG shooting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/16000 vs 1/8000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • HDMI out
    Both provide
    Use HDMI output to monitor or review 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
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • 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

User reviews

Buy From

Your purchases support this site

Buy the Pentax K-3

Review Excerpt

  • Top-notch image quality; Great ergonomics in a compact body; Unique on-demand low-pass filtering; Broad sensitivity range; Large and bright viewfinder for an APS-C camera; Dual card slots; Optional Wi-Fi remote control

  • AE Lock button is poorly located; Below-average battery life for a DSLR; Rather dated-looking menu system; Requires a different battery grip accessory than its predecessors; Less third-party support than some rivals

The Competition

Compared to Nikon D7100

Pentax K-3
Nikon D7100
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $690
  • APS-C
  • Fast startup
  • Longer stills battery life
Nikon J4
Nikon D7100
  • $350
  • 1 inch
  • Touchscreen
  • In-camera panoramas
  • $690
  • APS-C
  • Lens selection
  • Larger sensor

Compared to Nikon D5300

Pentax K-3
Nikon D5300
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $549
  • APS-C
  • Tilt-swivel screen
  • Fast startup
Nikon J4
Nikon D5300
  • $350
  • 1 inch
  • Touchscreen
  • In-camera panoramas
  • $549
  • APS-C
  • Tilt-swivel screen
  • Lens selection

Compared to Samsung NX Mini

Pentax K-3
Samsung NX Mini
  • $699
  • APS-C
  • Focus peaking
  • Larger sensor
  • $600
  • 1 inch
  • Less expensive
  • Touchscreen
Nikon J4
Samsung NX Mini
  • $350
  • 1 inch
  • On-sensor phase detect
  • Higher-res screen
  • $600
  • 1 inch
  • Less expensive
  • Tiltable Screen

Compared to Nikon D7200

Pentax K-3
Nikon D7200
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1016
  • APS-C
  • Fast startup
  • Built-in Wi-Fi
Nikon J4
Nikon D7200
  • $350
  • 1 inch
  • Touchscreen
  • In-camera panoramas
  • $1016
  • APS-C
  • Lens selection
  • Larger sensor

Compared to Nikon J5

Pentax K-3
Nikon J5
  • $699
  • APS-C
  • Lens selection
  • Focus peaking
  • $497
  • 1 inch
  • Shoot 4K video
  • Touchscreen
Nikon J4
Nikon J5
  • $350
  • 1 inch
  • Longer stills battery life
  • $497
  • 1 inch
  • Shoot 4K video
  • Tiltable Screen
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