• 35mm 847.3mm2
  • 12.2 megapixels
  • ISO 100 - 102,400
  • 35mm 861.6mm2
  • 36.4 megapixels
  • ISO 100 - 819,200

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Differences

Sony A7S II advantages over Pentax K-1 II

  • Bigger pixels
    ~ 8.40 vs 4.88 microns
    Better low-light and dynamic range (all else equal)
  • Shoot 4K video
    4K (UHD) vs 1080p
    Make sure you have a fast computer
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Thinner
    60 mm vs 85 mm
    Thinner
  • Lighter weight
    627g vs 1010g
    Lighter weight
  • More viewfinder magnification
    0.78x vs 0.70x
    Get a bigger view of the scene through the eye-level viewfinder
  • Bigger RAW buffer
    28 vs 17 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

Pentax K-1 II advantages over Sony A7S II

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Fast startup
    ~1.40 vs 2.9 sec
    Faster startup lets you catch the moment
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Longer stills battery life
    More info 670 vs 370 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Newer
    19 months vs 4 years old
    Newer cameras often support more advanced features
  • More pixels
    36.4 vs 12.2 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Optional anti-aliasing filter
    Optional vs Fixed
    Lets you choose sharper photos or reduced moiré
  • Higher extended ISO
    819200 vs 409600 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
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • 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
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • 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

User reviews

Buy From

Review Excerpt

  • Comfortable and surprisingly compact camera body; Improved low light performance; Built-in image stabilization; Wide range of usable ISOs; More sophisticated autofocus performance; Excellent video capabilities.

  • Relatively low resolution; Mediocre continuous shooting performance; No built-in flash; No losslessly compressed RAW option.

  • Excellent build and comfortable handling; Bright, roomy viewfinder and articulated LCD; Great image quality; Good performance for the class; In-camera stabilization, GPS and Wi-Fi; Incredibly feature-rich design.

  • Bulkier than APS-C DSLRs; Top ISOs are for the spec sheet, not the real world; JPEGs are a bit punchy by default; Slow startup; Below-average battery life; Only a relatively modest update to the K-1.

The Competition

Compared to Sony A7S

Sony A7S II
Sony A7S
  • $1998
  • 35mm
  • In-Camera Image Stabilization
  • Shoot 4K video
  • $1998
  • 35mm
  • Fast startup
  • Higher effective ISO
Pentax K-1 II
Sony A7S
  • $1733
  • 35mm
  • Lens selection
  • In-Camera Image Stabilization
  • $1998
  • 35mm
  • Bigger pixels
  • In-camera panoramas

Compared to Leica M (Typ 262)

Sony A7S II
Leica M (Typ 262)
  • $1998
  • 35mm
  • Lens selection
  • Focus peaking
  • $4445
  • 35mm
  • Thinner
  • More pixels
Pentax K-1 II
Leica M (Typ 262)
  • $1733
  • 35mm
  • Lens selection
  • Focus peaking
  • $4445
  • 35mm
  • Bigger pixels
  • Thinner

Compared to Pentax K-1

Sony A7S II
Pentax K-1
  • $1998
  • 35mm
  • Bigger pixels
  • Shoot 4K video
  • $1800
  • 35mm
  • Lens selection
  • High resolution composite
Pentax K-1 II
Pentax K-1
  • $1733
  • 35mm
  • Newer
  • Higher extended ISO
  • $1800
  • 35mm

Compared to Canon 5D Mark IV

Sony A7S II
Canon 5D Mark IV
  • $1998
  • 35mm
  • Less expensive
  • Focus peaking
  • $2499
  • 35mm
  • Lens selection
  • Touchscreen
Pentax K-1 II
Canon 5D Mark IV
  • $1733
  • 35mm
  • Less expensive
  • Focus peaking
  • $2499
  • 35mm
  • Shoot 4K video
  • Touchscreen

Compared to Sony A9

Sony A7S II
Sony A9
  • $1998
  • 35mm
  • Less expensive
  • Bigger pixels
  • $3498
  • 35mm
  • Touchscreen
  • Fast startup
Pentax K-1 II
Sony A9
  • $1733
  • 35mm
  • Lens selection
  • Less expensive
  • $3498
  • 35mm
  • Bigger pixels
  • Shoot 4K video
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