• 1 inch 116.2mm2
  • 20.2 megapixels
  • 28.00mm - 100.00mm (35mm eq.)
  • 4/3 226.2mm2
  • 20.4 megapixels
  • ISO 200 - 6400

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Differences

Sony RX100 advantages over Olympus E-M5 III

  • 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
  • Thinner
    35 mm vs 49 mm
    Thinner
  • Higher max flash sync
    1/2000 vs 1/250 sec
    Reduce the effect of ambient light in flash shots
  • Lighter weight
    240g vs 414g
    Lighter weight
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos

Olympus E-M5 III advantages over Sony RX100

  • Larger sensor
    4/3 vs 1 inch
    More sensor area. Bigger is (generally) better.
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • Bigger pixels
    ~ 3.36 vs 2.41 microns
    Better low-light and dynamic range (all else equal)
  • Shoot 4K video
    4K (DCI) vs 1080p
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • 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
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Newer
    6 years vs 13 years old
    Newer cameras often support more advanced features
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    30.0 fps vs 10.0 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    26 vs 13 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    30.0 fps vs 10.0 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    23 vs 13 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/32000 vs 1/2000 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
  • 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
  • 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

  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter
  • 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

Your purchases support this site

Buy the Sony RX100

Your purchases support this site

Buy the Olympus E-M5 III

Review Excerpt

  • Excellent high-ISO performance for such a compact model; Smart controls; Small body; Bright lens; 10fps full-res burst mode; Very fast shutter response; Excellent LCD.

  • Lens flare at night; Poor rendering of yellows; Slow flash recycling; Soft corners wide open; Continuous AF mode slow to lock.

  • Improved image quality; Very good dynamic range & high ISO performance for a modern MFT sensor; Very fast AF; Excellent image stabilization; 4K video recording; Weather-sealed build quality.

  • Below average battery life; Small size can be awkward with long, heavy lenses; One SD card slot.

The Competition

Compared to Sony RX100 II

Sony RX100
Sony RX100 II
  • $1095
  • 1 inch
  • Faster RAW shooting
  • $598
  • 1 inch
  • Tiltable Screen
  • Built-in Wi-Fi
Olympus E-M5 III
Sony RX100 II
  • $824
  • 4/3
  • Tilt-swivel screen
  • Larger sensor
  • $598
  • 1 inch
  • Less expensive
  • In-camera panoramas

Compared to Sony RX100 III

Sony RX100
Sony RX100 III
  • $1095
  • 1 inch
  • More telephoto lens reach
  • Faster RAW shooting
  • $748
  • 1 inch
  • Eye-level viewfinder
  • Tiltable Screen
Olympus E-M5 III
Sony RX100 III
  • $824
  • 4/3
  • Tilt-swivel screen
  • Larger sensor
  • $748
  • 1 inch
  • Less expensive
  • In-camera panoramas

Compared to Canon G7X

Sony RX100
Canon G7X
  • $1095
  • 1 inch
  • In-camera panoramas
  • Longer stills battery life
  • $1239
  • 1 inch
  • Touchscreen
  • Tiltable Screen
Olympus E-M5 III
Canon G7X
  • $824
  • 4/3
  • Tilt-swivel screen
  • Larger sensor
  • $1239
  • 1 inch
  • NFC
  • Internal flash

Compared to Panasonic G100

Sony RX100
Panasonic G100
  • $1095
  • 1 inch
  • In-Camera Image Stabilization
  • Thinner
  • $599
  • 4/3
  • Larger sensor
  • Tilt-swivel screen
Olympus E-M5 III
Panasonic G100
  • $824
  • 4/3
  • In-Camera Image Stabilization
  • High resolution composite
  • $599
  • 4/3
  • Less expensive
  • In-camera panoramas

Compared to Olympus E-M10 IV

Sony RX100
Olympus E-M10 IV
  • $1095
  • 1 inch
  • In-camera panoramas
  • Thinner
  • $599
  • 4/3
  • Larger sensor
  • Eye-level viewfinder
Olympus E-M5 III
Olympus E-M10 IV
  • $824
  • 4/3
  • Tilt-swivel screen
  • High resolution composite
  • $599
  • 4/3
  • Less expensive
  • Longer video battery life
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