• APS-C 366.6mm2
  • 24.4 megapixels
  • ISO 100 - 51,200
  • 1 inch 116.2mm2
  • 20.1 megapixels
  • 24.00mm - 200.00mm (35mm eq.)

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Differences

Pentax K-3 advantages over Sony RX100 VII

  • Larger sensor
    APS-C vs 1 inch
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 3.91 vs 2.41 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.90 vs 1.8 sec
    Faster startup lets you catch the moment
  • Longer stills battery life
    More info 560 vs 260 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • More pixels
    24.4 vs 20.1 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
  • Optional anti-aliasing filter
    Optional vs Fixed
    Lets you choose sharper photos or reduced moiré
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Sony RX100 VII advantages over Pentax K-3

  • 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
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • 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
  • Thinner
    42 mm vs 77 mm
    Thinner
  • Higher max flash sync
    1/2000 vs 1/180 sec
    Reduce the effect of ambient light in flash shots
  • Newer
    5 years vs 11 years old
    Newer cameras often support more advanced features
  • Faster JPEG shooting
    20.0 fps vs 7.1 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    169 vs 75 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    20.0 fps vs 7.1 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    77 vs 24 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/32000 vs 1/8000 sec
    Shoot wide open in bright light

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
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • 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

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter

User reviews

Buy From

Your purchases support this site

Buy the Pentax K-3

Review Excerpt

  • Top-notch image quality; Great ergonomics in a compact body; Unique on-demand low-pass filtering; Broad sensitivity range; Large and bright viewfinder for an APS-C camera; Dual card slots; Optional Wi-Fi remote control

  • AE Lock button is poorly located; Below-average battery life for a DSLR; Rather dated-looking menu system; Requires a different battery grip accessory than its predecessors; Less third-party support than some rivals

The Competition

Compared to Nikon D7100

Pentax K-3
Nikon D7100
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $745
  • APS-C
  • Fast startup
  • Longer stills battery life
Sony RX100 VII
Nikon D7100
  • $1298
  • 1 inch
  • Focus peaking
  • In-Camera Image Stabilization
  • $745
  • APS-C
  • Less expensive
  • Larger sensor

Compared to Nikon D5300

Pentax K-3
Nikon D5300
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $549
  • APS-C
  • Tilt-swivel screen
  • Fast startup
Sony RX100 VII
Nikon D5300
  • $1298
  • 1 inch
  • Focus peaking
  • In-Camera Image Stabilization
  • $549
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Nikon D7200

Pentax K-3
Nikon D7200
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1016
  • APS-C
  • Fast startup
  • Built-in Wi-Fi
Sony RX100 VII
Nikon D7200
  • $1298
  • 1 inch
  • Focus peaking
  • In-Camera Image Stabilization
  • $1016
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Panasonic ZS100

Pentax K-3
Panasonic ZS100
  • $699
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $498
  • 1 inch
  • Shoot 4K video
  • Touchscreen
Sony RX100 VII
Panasonic ZS100
  • $1298
  • 1 inch
  • Slower slow-motion
  • Tiltable Screen
  • $498
  • 1 inch
  • Less expensive
  • More telephoto lens reach

Compared to Sony RX100 VI

Pentax K-3
Sony RX100 VI
  • $699
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $949
  • 1 inch
  • Shoot 4K video
  • Touchscreen
Sony RX100 VII
Sony RX100 VI
  • $1298
  • 1 inch
  • External Mic Jack
  • $949
  • 1 inch
  • Less expensive
  • Faster JPEG shooting
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