• Medium format 1,436.6mm2
  • 51.4 megapixels
  • ISO 100 - 204,800
  • 35mm 864.0mm2
  • 50.6 megapixels
  • ISO 100 - 6400

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Differences

Pentax 645Z advantages over Canon 5DS

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    Medium format vs 35mm
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 5.31 vs 4.14 microns
    Better low-light and dynamic range (all else equal)
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Less shutter lag
    0.16 vs 0.27 sec
    Focus and take a photo quickly (wide angle)
  • More viewfinder magnification
    0.78x vs 0.71x
    Get a bigger view of the scene through the eye-level viewfinder
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Higher extended ISO
    204800 vs 12800 ISO
    Higher extended ISO can give more low-light flexibility

Canon 5DS advantages over Pentax 645Z

  • Lens selection
    Excellent vs Limited
    Better lens selection gives you more options
  • Less expensive
    $3499 vs $5497
    Save money for lenses or accessories
  • Fast startup
    ~0.50 vs 1.5 sec
    Faster startup lets you catch the moment
  • Thinner
    76 mm vs 123 mm
    Thinner
  • More cross-type AF points
    41 vs 25
    Cross-type AF points improve autofocus performance
  • Higher max flash sync
    1/200 vs 1/125 sec
    Reduce the effect of ambient light in flash shots
  • Newer
    2 years vs 3 years old
    Newer cameras often support more advanced features
  • Lighter weight
    946g vs 1555g
    Lighter weight
  • More AF points
    61 vs 27
    More AF points improve autofocus
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Faster JPEG shooting
    4.8 fps vs 3.1 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    28 vs 12 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    4.9 fps vs 3.1 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    15 vs 10 shots
    Larger buffer for RAW shots (burst mode)
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light

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
  • HDMI out
    Both provide
    Use an external screen 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
  • 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
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • 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
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

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

The Competition

Compared to Pentax 645D

Pentax 645Z
Pentax 645D
  • $5497
  • Medium format
  • Focus peaking
  • Tiltable Screen
  • $3599
  • Medium format
  • Fast startup
  • Longer stills battery life
Canon 5DS
Pentax 645D
  • $3499
  • 35mm
  • Lens selection
  • Fast startup
  • $3599
  • Medium format
  • Larger sensor
  • Bigger pixels

Compared to Leica S (Typ 007)

Pentax 645Z
Leica S (Typ 007)
  • $5497
  • Medium format
  • Less expensive
  • Tiltable Screen
  • $18950
  • Medium format
  • Shoot 4K video
  • Built-in Wi-Fi
Canon 5DS
Leica S (Typ 007)
  • $3499
  • 35mm
  • Lens selection
  • Less expensive
  • $18950
  • Medium format
  • Focus peaking
  • Larger sensor

Compared to Leica S-E (Typ 006)

Pentax 645Z
Leica S-E (Typ 006)
  • $5497
  • Medium format
  • Focus peaking
  • Tiltable Screen
  • $16900
  • Medium format
  • Built-in GPS
  • Thinner
Canon 5DS
Leica S-E (Typ 006)
  • $3499
  • 35mm
  • Lens selection
  • External Mic Jack
  • $16900
  • Medium format
  • Larger sensor
  • Bigger pixels

Compared to Canon 5DS R

Pentax 645Z
Canon 5DS R
  • $5497
  • Medium format
  • Focus peaking
  • Larger sensor
  • $3699
  • 35mm
  • Lens selection
  • Less expensive
Canon 5DS
Canon 5DS R
  • $3499
  • 35mm
  • Has anti-aliasing filter
  • $3699
  • 35mm
  • Lacks anti-aliasing filter

Compared to Sony A99 II

Pentax 645Z
Sony A99 II
  • $5497
  • Medium format
  • Larger sensor
  • Bigger pixels
  • $3198
  • 35mm
  • Lens selection
  • Less expensive
Canon 5DS
Sony A99 II
  • $3499
  • 35mm
  • Lens selection
  • Fast startup
  • $3198
  • 35mm
  • Focus peaking
  • Tilt-swivel screen
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