• 1 inch 116.2mm2
  • 20.2 megapixels
  • 24.00mm - 70.00mm (35mm eq.)
  • 35mm 847.3mm2
  • 24.2 megapixels
  • ISO 100 - 51,200

Buy From

Differences

Sony RX100 III advantages over Sony A9

  • Less expensive
    $648 vs $4498
    Save money for lenses or accessories
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Integrated ND filter
    Yes vs No
    Shoot in daylight with a large aperture or slow shutter
  • Thinner
    41 mm vs 63 mm
    Thinner
  • Higher max flash sync
    1/2000 vs 1/250 sec
    Reduce the effect of ambient light in flash shots
  • Lighter weight
    287g vs 673g
    Lighter weight
  • Less shutter lag
    0.15 vs 0.22 sec
    Focus and take a photo quickly (wide angle)

Sony A9 advantages over Sony RX100 III

  • Larger sensor
    35mm vs 1 inch
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 5.93 vs 2.41 microns
    Better low-light and dynamic range (all else equal)
  • 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
  • Fast startup
    ~1.20 vs 2.0 sec
    Faster startup lets you catch the moment
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Better color depth
    24.9 vs 22.4 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    3,517 vs 495 iso
    Take photos in low light with less noise
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 650 vs 320 shots
    Capture more photos
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Newer
    19 months vs 4 years old
    Newer cameras often support more advanced features
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • More viewfinder magnification
    0.78x vs 0.59x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    24.2 vs 20.2 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
  • Faster JPEG shooting
    20.0 fps vs 10.0 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    364 vs 48 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    20.0 fps vs 6.7 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    240 vs 26 shots
    Larger buffer for RAW shots (burst mode)
  • Faster shutter
    1/32000 vs 1/2000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    204800 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
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • NFC
    Both provide
    Simplifies pairing your camera with supported phones
  • 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
  • Slow-motion videos
    Both provide
    Shoot slow-motion videos

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • 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

  • 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

  • New sensor offers incredible performance; Excellent image quality at low & high ISOs; Very good dynamic range; Phenomenal 20fps burst speed & deep buffer; Very good battery life for a mirrorless; 4K video; Dual card slots.

  • Slow buffer clearing; Only one card slot is UHS-II compatible; Touchscreen underutilized; No lossless RAW compression option; No 4K/60p option.

The Competition

Compared to Sony RX100

Sony RX100 III
Sony RX100
  • $648
  • 1 inch
  • Eye-level viewfinder
  • Tiltable Screen
  • $392
  • 1 inch
  • Less expensive
  • More telephoto lens reach
Sony A9
Sony RX100
  • $4498
  • 35mm
  • Larger sensor
  • Eye-level viewfinder
  • $392
  • 1 inch
  • Less expensive
  • In-camera panoramas

Compared to Sony RX100 II

Sony RX100 III
Sony RX100 II
  • $648
  • 1 inch
  • Eye-level viewfinder
  • Fast startup
  • $584
  • 1 inch
  • Less expensive
  • More telephoto lens reach
Sony A9
Sony RX100 II
  • $4498
  • 35mm
  • Larger sensor
  • Eye-level viewfinder
  • $584
  • 1 inch
  • Less expensive
  • In-camera panoramas

Compared to Canon G7X

Sony RX100 III
Canon G7X
  • $648
  • 1 inch
  • Eye-level viewfinder
  • In-camera panoramas
  • $604
  • 1 inch
  • Less expensive
  • Touchscreen
Sony A9
Canon G7X
  • $4498
  • 35mm
  • Larger sensor
  • Eye-level viewfinder
  • $604
  • 1 inch
  • Less expensive
  • Internal flash

Compared to Panasonic LX100

Sony RX100 III
Panasonic LX100
  • $648
  • 1 inch
  • Tiltable Screen
  • Internal flash
  • $598
  • 4/3
  • Larger sensor
  • Bigger pixels
Sony A9
Panasonic LX100
  • $4498
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $598
  • 4/3
  • Less expensive
  • In-camera panoramas

Compared to Sony RX100 IV

Sony RX100 III
Sony RX100 IV
  • $648
  • 1 inch
  • Less expensive
  • $798
  • 1 inch
  • Slower slow-motion
  • Shoot 4K video
Sony A9
Sony RX100 IV
  • $4498
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $798
  • 1 inch
  • Less expensive
  • Slower slow-motion
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