• APS-C 366.6mm2
  • 24.4 megapixels
  • ISO 100 - 51,200
  • 35mm 861.6mm2
  • 42.4 megapixels
  • 35.00mm (35mm eq.)

Buy From

Differences

Pentax K-3 advantages over Sony RX1R II

  • Less expensive
    $999 vs $3298*
    Save money for lenses or accessories
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Fast startup
    ~0.90 vs 1.5 sec
    Faster startup lets you catch the moment
  • Longer stills battery life
    More info 560 vs 220 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Less shutter lag
    0.14 vs 0.26 sec
    Focus and take a photo quickly (wide angle)
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Faster JPEG shooting
    7.1 fps vs 5.0 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    75 vs 24 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    7.1 fps vs 5.0 fps
    Faster RAW shooting in burst mode
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light

Sony RX1R II advantages over Pentax K-3

  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.51 vs 3.91 microns
    Better low-light and dynamic range (all else equal)
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Higher effective ISO
    3,204 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
  • Higher max flash sync
    1/2000 vs 1/180 sec
    Reduce the effect of ambient light in flash shots
  • Newer
    4 years vs 6 years old
    Newer cameras often support more advanced features
  • More viewfinder magnification
    0.74x vs 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    42.4 vs 24.4 megapixels
    Higher resolution photos
  • 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

  • Rear display
    Both provide
    Review photos on the back of the camera
  • 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
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • 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

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter

User reviews

Buy From

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

  • Excellent image quality; Extremely high resolution; Surprisingly good high ISO performance; Outstanding dynamic range; Handy variable low-pass filter; Fast phase-detect AF; Built-in EVF.

  • Fixed, single focal length lens; Poor battery life; No built-in flash; No touchscreen LCD; Slow buffer clearing; No 4K video; Expensive.

The Competition

Compared to Sony RX1

Pentax K-3
Sony RX1
  • $699
  • APS-C
  • Less expensive
  • Eye-level viewfinder
  • $2398
  • 35mm
  • Larger sensor
  • Bigger pixels
Sony RX1R II
Sony RX1
  • $3298
  • 35mm
  • Eye-level viewfinder
  • Tiltable Screen
  • $2398
  • 35mm
  • Less expensive
  • Bigger pixels

Compared to Nikon D7100

Pentax K-3
Nikon D7100
  • $699
  • APS-C
  • Focus peaking
  • Less expensive
  • $1297
  • APS-C
  • Fast startup
  • Longer stills battery life
Sony RX1R II
Nikon D7100
  • $3298
  • 35mm
  • Focus peaking
  • Larger sensor
  • $1297
  • APS-C
  • Less expensive
  • Fast startup

Compared to Sony RX1R

Pentax K-3
Sony RX1R
  • $699
  • APS-C
  • Less expensive
  • Eye-level viewfinder
  • $2398
  • 35mm
  • Larger sensor
  • Bigger pixels
Sony RX1R II
Sony RX1R
  • $3298
  • 35mm
  • Eye-level viewfinder
  • Tiltable Screen
  • $2398
  • 35mm
  • Less expensive
  • Bigger pixels

Compared to Canon 70D

Pentax K-3
Canon 70D
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $927
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Sony RX1R II
Canon 70D
  • $3298
  • 35mm
  • Focus peaking
  • Larger sensor
  • $927
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Nikon D7200

Pentax K-3
Nikon D7200
  • $699
  • APS-C
  • Focus peaking
  • Less expensive
  • $1097
  • APS-C
  • Fast startup
  • Built-in Wi-Fi
Sony RX1R II
Nikon D7200
  • $3298
  • 35mm
  • Focus peaking
  • Larger sensor
  • $1097
  • APS-C
  • Less expensive
  • Fast startup
Compare Other Cameras?