• APS-C 366.6mm2
  • 24.4 megapixels
  • ISO 100 - 51,200
  • 35mm 858.0mm2
  • 45.7 megapixels
  • ISO 64 - 25,600

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Differences

Pentax K-3 advantages over Nikon Z7

  • Fast startup
    ~0.90 vs 1.5 sec
    Faster startup lets you catch the moment
  • Longer stills battery life
    More info 560 vs 400 shots
    Capture more photos
  • More telephoto lens reach
    203 mm vs 70 mm
    Capture objects farther away with the kit lens
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Less shutter lag
    0.14 vs 0.21 sec
    Focus and take a photo quickly (wide angle)
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Optional anti-aliasing filter
    Optional vs None
    Lets you choose sharper photos or reduced moiré
  • Bigger JPEG buffer
    75 vs 26 shots
    Take more JPEG shots before waiting (burst mode)

Nikon Z7 advantages over Pentax K-3

  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • 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
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Better color depth
    26.3 vs 23.7 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    2,668 vs 1,216 iso
    Take photos in low light with less noise
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Newer
    6 years vs 11 years old
    Newer cameras often support more advanced features
  • More dots on screen
    2100k vs 1037k dots
    Can mean greater resolution or a brighter screen
  • More viewfinder magnification
    0.80x vs 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    45.7 vs 24.4 megapixels
    Higher resolution photos
  • Wider angle kit lens
    24 mm vs 27 mm
    Capture more of the scene with the included lens
  • Faster JPEG shooting
    9.0 fps vs 7.1 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    9.0 fps vs 7.1 fps
    Faster RAW shooting in burst mode
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Higher extended ISO
    102400 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
  • 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
  • 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
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in GPS
    Neither provide
    Geotag your photos

User reviews

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Your purchases support this site

Buy the Pentax K-3

Your purchases support this site

Buy the Nikon Z7

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

  • Familiar design in a compact form; Rugged build quality; Gorgeous EVF; Excellent image quality; Good autofocus; In-body image stabilization; Good 4K video recording.

  • Single card slot; Not as good at subject tracking as some Nikon DSLR cameras; Limited native lens selection (although adapter works well); Limited buffer depths.

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 Z7
Nikon D7100
  • $2147
  • 35mm
  • Focus peaking
  • Larger sensor
  • $690
  • APS-C
  • Less expensive
  • Fast startup

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 Z7
Nikon D5300
  • $2147
  • 35mm
  • Focus peaking
  • Larger sensor
  • $549
  • APS-C
  • Less expensive
  • Tilt-swivel 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 Z7
Nikon D7200
  • $2147
  • 35mm
  • Focus peaking
  • Larger sensor
  • $1016
  • APS-C
  • Less expensive
  • Fast startup

Compared to Nikon Z6

Pentax K-3
Nikon Z6
  • $699
  • APS-C
  • Fast startup
  • Longer stills battery life
  • $1396
  • 35mm
  • Larger sensor
  • Bigger pixels
Nikon Z7
Nikon Z6
  • $2147
  • 35mm
  • More pixels
  • Lacks anti-aliasing filter
  • $1396
  • 35mm
  • Less expensive
  • Bigger pixels

Compared to Canon EOS R

Pentax K-3
Canon EOS R
  • $699
  • APS-C
  • In-Camera Image Stabilization
  • Fast startup
  • $1499
  • 35mm
  • Larger sensor
  • Tilt-swivel screen
Nikon Z7
Canon EOS R
  • $2147
  • 35mm
  • In-Camera Image Stabilization
  • Fast startup
  • $1499
  • 35mm
  • Less expensive
  • Tilt-swivel screen
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