• APS-C 369.7mm2
  • 16.3 megapixels
  • ISO 100 - 12,800
  • 35mm 849.7mm2
  • 61.0 megapixels
  • ISO 100 - 32,000

Buy From

Differences

Pentax K-01 advantages over Sony A7R IV

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Bigger pixels
    ~ 4.81 vs 3.76 microns
    Better low-light and dynamic range (all else equal)
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    58 mm vs 77 mm
    Thinner
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos

Sony A7R IV advantages over Pentax K-01

  • Larger sensor
    35mm vs APS-C
    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
  • 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
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Fast startup
    ~1.30 vs 2.4 sec
    Faster startup lets you catch the moment
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 670 vs 500 shots
    Capture more photos
  • Newer
    3 months vs 8 years old
    Newer cameras often support more advanced features
  • More dots on screen
    1440k vs 921k dots
    Can mean greater resolution or a brighter screen
  • Less shutter lag
    0.20 vs 0.80 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    61.0 vs 16.3 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
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Faster JPEG shooting
    10.0 fps vs 5.9 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    70 vs 9 shots
    Take more JPEG shots before waiting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    102400 vs 25600 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
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • 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 panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera

User reviews

Buy From

Review Excerpt

  • Very good image quality and excellent high ISO performance. Premium build quality. In-body image stabilization. Lots of creative features. Full HD movie capture with manual exposure control.

  • Barely any smaller than a standard SLR, but lacks viewfinder and phase-detect autofocus. Contrast-detect AF is slow and unreliable. Body design is clumsy and uncomfortable. Very slow raw burst shooting.

The Competition

Compared to Samsung NX20

Pentax K-01
Samsung NX20
  • $359
  • APS-C
  • Lens selection
  • Focus peaking
  • $499
  • APS-C
  • Eye-level viewfinder
  • Tiltable Screen
Sony A7R IV
Samsung NX20
  • $3498
  • 35mm
  • Lens selection
  • Focus peaking
  • $499
  • APS-C
  • Less expensive
  • Bigger pixels

Compared to Fujifilm X-E1

Pentax K-01
Fujifilm X-E1
  • $359
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization
  • $499
  • APS-C
  • Eye-level viewfinder
  • In-camera panoramas
Sony A7R IV
Fujifilm X-E1
  • $3498
  • 35mm
  • Larger sensor
  • In-Camera Image Stabilization
  • $499
  • APS-C
  • Less expensive
  • Bigger pixels

Compared to Fujifilm X-E2

Pentax K-01
Fujifilm X-E2
  • $359
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization
  • $449
  • APS-C
  • Eye-level viewfinder
  • In-camera panoramas
Sony A7R IV
Fujifilm X-E2
  • $3498
  • 35mm
  • Larger sensor
  • In-Camera Image Stabilization
  • $449
  • APS-C
  • Less expensive
  • Bigger pixels

Compared to Sony A7R III

Pentax K-01
Sony A7R III
  • $359
  • APS-C
  • Lens selection
  • Internal flash
  • $2498
  • 35mm
  • Larger sensor
  • Eye-level viewfinder
Sony A7R IV
Sony A7R III
  • $3498
  • 35mm
  • Fast startup
  • Newer
  • $2498
  • 35mm
  • Less expensive
  • Bigger pixels

Compared to Fujifilm GFX 50R

Pentax K-01
Fujifilm GFX 50R
  • $359
  • APS-C
  • In-Camera Image Stabilization
  • Longer stills battery life
  • $3999
  • Medium format
  • Larger sensor
  • Eye-level viewfinder
Sony A7R IV
Fujifilm GFX 50R
  • $3498
  • 35mm
  • In-Camera Image Stabilization
  • Shoot 4K video
  • $3999
  • Medium format
  • Larger sensor
  • Bigger pixels
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