• APS-C 369.7mm2
  • 14.2 megapixels
  • ISO 100 - 12,800
  • 1 inch 116.2mm2
  • 20.2 megapixels
  • 24.00mm - 70.00mm (35mm eq.)

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Differences

Sony A33 advantages over Sony RX100 III

  • Larger sensor
    APS-C vs 1 inch
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 5.16 vs 2.41 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.80 vs 2.0 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    591 vs 495 iso
    Take photos in low light with less noise
  • 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 viewfinder magnification
    0.73x vs 0.59x
    Get a bigger view of the scene through the eye-level viewfinder
  • Faster shutter
    1/4000 vs 1/2000 sec
    Shoot wide open in bright light

Sony RX100 III advantages over Sony A33

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • 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 84 mm
    Thinner
  • Higher max flash sync
    1/2000 vs 1/160 sec
    Reduce the effect of ambient light in flash shots
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • More dots on screen
    1229k vs 922k dots
    Can mean greater resolution or a brighter screen
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • Less shutter lag
    0.15 vs 0.21 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    20.2 vs 14.2 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Faster JPEG shooting
    10.0 fps vs 7.1 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    48 vs 13 shots
    Take more JPEG shots before waiting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • 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
  • In-camera panoramas
    Both provide
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • 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.
  • 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
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • 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

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

The Competition

Compared to Sony RX100

Sony A33
Sony RX100
  • $540
  • APS-C
  • Larger sensor
  • Eye-level viewfinder
  • $1074
  • 1 inch
  • Less expensive
  • Focus peaking
Sony RX100 III
Sony RX100
  • $748
  • 1 inch
  • Eye-level viewfinder
  • Tiltable Screen
  • $1074
  • 1 inch
  • More telephoto lens reach
  • Faster RAW shooting

Compared to Sony RX100 II

Sony A33
Sony RX100 II
  • $540
  • APS-C
  • Larger sensor
  • Eye-level viewfinder
  • $598
  • 1 inch
  • Focus peaking
  • Built-in Wi-Fi
Sony RX100 III
Sony RX100 II
  • $748
  • 1 inch
  • Eye-level viewfinder
  • Fast startup
  • $598
  • 1 inch
  • Less expensive
  • More telephoto lens reach

Compared to Canon G7X

Sony A33
Canon G7X
  • $540
  • APS-C
  • Larger sensor
  • Eye-level viewfinder
  • $699
  • 1 inch
  • Focus peaking
  • Touchscreen
Sony RX100 III
Canon G7X
  • $748
  • 1 inch
  • Eye-level viewfinder
  • In-camera panoramas
  • $699
  • 1 inch
  • Touchscreen
  • More telephoto lens reach

Compared to Panasonic LX100

Sony A33
Panasonic LX100
  • $540
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $598
  • 4/3
  • Focus peaking
  • Shoot 4K video
Sony RX100 III
Panasonic LX100
  • $748
  • 1 inch
  • Tiltable Screen
  • Internal flash
  • $598
  • 4/3
  • Less expensive
  • Larger sensor

Compared to Nikon D3100

Sony A33
Nikon D3100
  • $540
  • APS-C
  • In-Camera Image Stabilization
  • In-camera panoramas
  • $700
  • APS-C
  • Lens selection
  • Fast startup
Sony RX100 III
Nikon D3100
  • $748
  • 1 inch
  • Focus peaking
  • In-Camera Image Stabilization
  • $700
  • APS-C
  • Larger sensor
  • Bigger pixels
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