• 35mm 847.3mm2
  • 12.2 megapixels
  • ISO 100 - 102,400
  • APS-C 366.6mm2
  • 24.2 megapixels
  • ISO 100 - 102,400

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Differences

Sony A7S II advantages over Pentax K-70

  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 8.40 vs 3.92 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
  • More viewfinder magnification
    0.78x vs 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Bigger RAW buffer
    28 vs 11 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Higher extended ISO
    409600 vs 102400 ISO
    Higher extended ISO can give more low-light flexibility

Pentax K-70 advantages over Sony A7S II

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Less expensive
    $797 vs $2398*
    Save money for lenses or accessories
  • Tilt-swivel screen
    Tilt-swivel vs tilt-only
    Tilt and swivel the screen for maximum shooting flexibility
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Fast startup
    ~1.00 vs 2.9 sec
    Faster startup lets you catch the moment
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • More pixels
    24.2 vs 12.2 megapixels
    Higher resolution photos
  • Optional anti-aliasing filter
    Optional vs Fixed
    Lets you choose sharper photos or reduced moiré
  • Faster JPEG shooting
    6.1 fps vs 5.0 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    6.1 fps vs 5.0 fps
    Faster RAW shooting in burst mode

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
  • 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
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • 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
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • Dual card slots
    Neither provide
    Gives you more storage flexibility

User reviews

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Your purchases support this site

Buy the Pentax K-70

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.

  • Huge bang for the buck; Great image quality; Excellent high ISO performance; Fast autofocus; Good burst frame rate with deep buffer; Pentaprism viewfinder; Twin control dials; Articulated LCD; Comprehensive weather-sealing and freeze-proofing; Unbelievable wealth of rare to unique (yet very useful) features

  • Wi-Fi wireless communication is slow, clumsy and unintuitive; Video autofocus is prone to hunting or racking focus; Slow buffer clearing; Rather heavy for an entry-level DSLR; Autofocus and metering systems are a bit dated; Below average battery life

The Competition

Compared to Sony A7S

Sony A7S II
Sony A7S
  • $2398
  • 35mm
  • In-Camera Image Stabilization
  • Shoot 4K video
  • $1998
  • 35mm
  • Less expensive
  • Fast startup
Pentax K-70
Sony A7S
  • $597
  • APS-C
  • Lens selection
  • Less expensive
  • $1998
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Canon T6s

Sony A7S II
Canon T6s
  • $2398
  • 35mm
  • Focus peaking
  • Larger sensor
  • $619
  • APS-C
  • Lens selection
  • Less expensive
Pentax K-70
Canon T6s
  • $597
  • APS-C
  • Focus peaking
  • Larger sensor
  • $619
  • APS-C
  • Touchscreen
  • NFC

Compared to Canon 77D

Sony A7S II
Canon 77D
  • $2398
  • 35mm
  • Focus peaking
  • Larger sensor
  • $550
  • APS-C
  • Lens selection
  • Less expensive
Pentax K-70
Canon 77D
  • $597
  • APS-C
  • Focus peaking
  • Larger sensor
  • $550
  • APS-C
  • Touchscreen
  • Fast startup

Compared to Sony A9

Sony A7S II
Sony A9
  • $2398
  • 35mm
  • Less expensive
  • Bigger pixels
  • $2997
  • 35mm
  • Touchscreen
  • Fast startup
Pentax K-70
Sony A9
  • $597
  • APS-C
  • Less expensive
  • Tilt-swivel screen
  • $2997
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Sony A7S III

Sony A7S II
Sony A7S III
  • $2398
  • 35mm
  • Less expensive
  • $3348
  • 35mm
  • Tilt-swivel screen
  • Slower slow-motion
Pentax K-70
Sony A7S III
  • $597
  • APS-C
  • Less expensive
  • Lens selection
  • $3348
  • 35mm
  • Larger sensor
  • Bigger pixels
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