• 1 inch 116.2mm2
  • 20.2 megapixels
  • 24.00mm - 70.00mm (35mm eq.)
  • APS-C 366.6mm2
  • 24.2 megapixels
  • ISO 100 - 102,400

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Differences

Sony RX100 III advantages over Pentax K-70

  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Integrated ND filter
    Yes vs No
    Shoot in daylight with a large aperture or slow shutter
  • Thinner
    41 mm vs 74 mm
    Thinner
  • Higher max flash sync
    1/2000 vs 1/180 sec
    Reduce the effect of ambient light in flash shots
  • Faster JPEG shooting
    10.0 fps vs 6.1 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    6.7 fps vs 6.1 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    26 vs 11 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

Pentax K-70 advantages over Sony RX100 III

  • Larger sensor
    APS-C vs 1 inch
    More sensor area. Bigger is (generally) better.
  • Tilt-swivel screen
    Tilt-swivel vs tilt-only
    Tilt and swivel the screen for maximum shooting flexibility
  • Bigger pixels
    ~ 3.92 vs 2.41 microns
    Better low-light and dynamic range (all else equal)
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Fast startup
    ~1.00 vs 2.0 sec
    Faster startup lets you catch the moment
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 410 vs 320 shots
    Capture more photos
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • More pixels
    24.2 vs 20.2 megapixels
    Higher resolution photos
  • Optional anti-aliasing filter
    Optional vs Fixed
    Lets you choose sharper photos or reduced moiré
  • Faster shutter
    1/6000 vs 1/2000 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

  • 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
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • 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
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video

User reviews

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Review Excerpt

  • Pocket-friendly design; Popup electronic viewfinder; Bright lens across the zoom range; Great performance with very fast autofocus; Very high resolution gives lots of detail in good light; High ISO noise levels much better than most pocket camera rivals; Wi-Fi wireless networking

  • Feels a little unbalanced without an accessory grip; Not as much telephoto reach as its siblings; Noise processing is heavier-handed than in earlier models; Quite pricey for a fixed-lens camera

  • Read our Sony RX100 III Review

  • 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

  • Read our Pentax K-70 Review

The Competition

Compared to Sony RX100

Sony RX100 III
Sony RX100
  • $748
  • 1 inch
  • Eye-level viewfinder
  • Tiltable Screen
  • $1095
  • 1 inch
  • More telephoto lens reach
  • Faster RAW shooting

Compare Sony RX100 III vs Sony RX100

Pentax K-70
Sony RX100
  • $597
  • APS-C
  • Larger sensor
  • Tilt-swivel screen
  • $1095
  • 1 inch
  • In-camera panoramas
  • Thinner

Compare Pentax K-70 vs Sony RX100

Compared to Sony RX100 II

Sony RX100 III
Sony RX100 II
  • $748
  • 1 inch
  • Eye-level viewfinder
  • Fast startup
  • $598
  • 1 inch
  • Less expensive
  • More telephoto lens reach

Compare Sony RX100 III vs Sony RX100 II

Pentax K-70
Sony RX100 II
  • $597
  • APS-C
  • Larger sensor
  • Tilt-swivel screen
  • $598
  • 1 inch
  • Less expensive
  • In-camera panoramas

Compare Pentax K-70 vs Sony RX100 II

Compared to Canon G7X

Sony RX100 III
Canon G7X
  • $748
  • 1 inch
  • Eye-level viewfinder
  • In-camera panoramas
  • $1239
  • 1 inch
  • Touchscreen
  • More telephoto lens reach

Compare Sony RX100 III vs Canon G7X

Pentax K-70
Canon G7X
  • $597
  • APS-C
  • Larger sensor
  • Tilt-swivel screen
  • $1239
  • 1 inch
  • Touchscreen
  • NFC

Compare Pentax K-70 vs Canon G7X

Compared to Panasonic LX100

Sony RX100 III
Panasonic LX100
  • $748
  • 1 inch
  • Tiltable Screen
  • Internal flash
  • $598
  • 4/3
  • Less expensive
  • Larger sensor

Compare Sony RX100 III vs Panasonic LX100

Pentax K-70
Panasonic LX100
  • $597
  • APS-C
  • Tilt-swivel screen
  • Larger sensor
  • $598
  • 4/3
  • Less expensive
  • Shoot 4K video

Compare Pentax K-70 vs Panasonic LX100

Compared to Canon T6s

Sony RX100 III
Canon T6s
  • $748
  • 1 inch
  • Focus peaking
  • In-Camera Image Stabilization
  • $619
  • APS-C
  • Tilt-swivel screen
  • Larger sensor

Compare Sony RX100 III vs Canon T6s

Pentax K-70
Canon T6s
  • $597
  • APS-C
  • Focus peaking
  • Larger sensor
  • $619
  • APS-C
  • Touchscreen
  • NFC

Compare Pentax K-70 vs Canon T6s

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