• Medium format 1,436.6mm2
  • 51.4 megapixels
  • ISO 100 - 204,800
  • 35mm 861.6mm2
  • 42.4 megapixels
  • 35.00mm (35mm eq.)

Buy From

Differences

Pentax 645Z advantages over Sony RX1R II

  • Larger sensor
    Medium format vs 35mm
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 5.31 vs 4.51 microns
    Better low-light and dynamic range (all else equal)
  • Higher effective ISO
    4,505 vs 3,204 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 650 vs 220 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Less shutter lag
    0.16 vs 0.26 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    51.4 vs 42.4 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Higher extended ISO
    204800 vs 102400 ISO
    Higher extended ISO can give more low-light flexibility

Sony RX1R II advantages over Pentax 645Z

  • Less expensive
    $3298 vs $4997
    Save money for lenses or accessories
  • 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
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Thinner
    72 mm vs 123 mm
    Thinner
  • Higher max flash sync
    1/2000 vs 1/125 sec
    Reduce the effect of ambient light in flash shots
  • Newer
    3 years vs 4 years old
    Newer cameras often support more advanced features
  • Lighter weight
    507g vs 1555g
    Lighter weight
  • Optional anti-aliasing filter
    Optional vs None
    Lets you choose sharper photos or reduced moiré
  • Faster JPEG shooting
    5.0 fps vs 3.1 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    24 vs 12 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    5.0 fps vs 3.1 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    23 vs 10 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

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
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • 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
  • In-Camera Image Stabilization
    Neither provide
    Reduces the effects of camera shake at slower shutter speeds
  • 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
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video

User reviews

Buy From

Review Excerpt

  • Phenomenal resolution and detail; Great high ISO performance; Rugged, weather-sealed body; Huge, bright viewfinder; Fast autofocus works well in low light; Swift performance for a medium-format camera; Good battery life; Shoots Full HD video

  • Quite bulky compared to an APS-C or full-frame DSLR; Autofocus points clustered near center of frame; Most lenses aren't weather-sealed or optimized for digital; Prone to aliasing artifacts (but so are most high-end cameras these days); Attracts a lot of attention from passers-by

  • 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 Pentax 645D

Pentax 645Z
Pentax 645D
  • $5665
  • Medium format
  • Focus peaking
  • Tiltable Screen
  • $3599
  • Medium format
  • Fast startup
  • Longer stills battery life
Sony RX1R II
Pentax 645D
  • $3298
  • 35mm
  • Focus peaking
  • In-camera panoramas
  • $3599
  • Medium format
  • Larger sensor
  • Bigger pixels

Compared to Sony RX1

Pentax 645Z
Sony RX1
  • $5665
  • Medium format
  • Larger sensor
  • Eye-level viewfinder
  • $2531
  • 35mm
  • Less expensive
  • In-camera panoramas
Sony RX1R II
Sony RX1
  • $3298
  • 35mm
  • Eye-level viewfinder
  • Tiltable Screen
  • $2531
  • 35mm
  • Less expensive
  • Bigger pixels

Compared to Sony RX1R

Pentax 645Z
Sony RX1R
  • $5665
  • Medium format
  • Larger sensor
  • Eye-level viewfinder
  • $3298
  • 35mm
  • Less expensive
  • In-camera panoramas
Sony RX1R II
Sony RX1R
  • $3298
  • 35mm
  • Eye-level viewfinder
  • Tiltable Screen
  • $3298
  • 35mm
  • Bigger pixels
  • Internal flash

Compared to Leica S (Typ 007)

Pentax 645Z
Leica S (Typ 007)
  • $5665
  • Medium format
  • Less expensive
  • Tiltable Screen
  • $19995
  • Medium format
  • Shoot 4K video
  • Built-in Wi-Fi
Sony RX1R II
Leica S (Typ 007)
  • $3298
  • 35mm
  • Less expensive
  • In-camera panoramas
  • $19995
  • Medium format
  • Larger sensor
  • Bigger pixels

Compared to Leica S-E (Typ 006)

Pentax 645Z
Leica S-E (Typ 006)
  • $5665
  • Medium format
  • Focus peaking
  • Tiltable Screen
  • $16900
  • Medium format
  • Built-in GPS
  • Thinner
Sony RX1R II
Leica S-E (Typ 006)
  • $3298
  • 35mm
  • Focus peaking
  • In-camera panoramas
  • $16900
  • Medium format
  • Larger sensor
  • Bigger pixels
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