Olympus E-M1 vs Sony RX100 III

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Olympus E-M1 vs Sony RX100 III

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4/3 224.9mm²
16.1 megapixels
ISO 200 - 25,600

Go in depth with our full Olympus E-M1 Review.
See real-world photos taken with the E-M1.

1 inch 116.2mm²
20.2 megapixels
24.00mm - 70.00mm (35mm eq.)

Go in depth with our full Sony RX100 III Review.
How does it shoot? Sony RX100 III in the real world.
See real-world photos taken with the RX100 III.
Compare Sony RX100 III image quality against competitors.
What’s the bottom line? Read our Sony RX100 III conclusion.

Succeeded by the Olympus E-M1 II
Compare E-M1 vs E-M1 II

Succeeded by the Sony RX100 IV
Compare RX100 III vs RX100 IV

Compare OLYMPUS E-M1 II vs SONY RX100 IV

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Differences

Olympus E-M1 advantages over Sony RX100 III

Larger sensor
4/3 vs 1 inch
More sensor area. Bigger is (generally) better.
Bigger pixels
~ 3.75 vs 2.41 microns
Better low-light and dynamic range (all else equal)
Touchscreen
Touch vs No touch
Interact with your camera just like your smartphone
Fast startup
~0.80 vs 2.0 sec
Faster startup lets you catch the moment
Higher effective ISO

Higher effective ISO

Maximum effective ISO is an estimate of the highest sensitivity at which a camera can capture excellent quality photos.

Cameras with higher effective ISO will be better choices for indoor photography, night shooting, and indoor sports photography, especially if you intend to make large prints.

You can learn more at our glossary entry.

Maximum effective ISO test data courtesy of DxO Mark.
E-M1 test data on DxO Mark RX100 III test data on DxO Mark

757 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
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
0.74x vs 0.59x
Get a bigger view of the scene through the eye-level viewfinder
Lacks anti-aliasing filter
No Filter vs Filter
Enjoy sharper photos
Longer exposure
60 vs 30 sec
Long exposures for night shots
Faster RAW shooting
9.9 fps vs 6.7 fps
Faster RAW shooting in burst mode
Bigger RAW buffer
50 vs 26 shots
Larger buffer for RAW shots (burst mode)
Faster shutter
1/16000 vs 1/2000 sec
Shoot wide open in bright light

Sony RX100 III advantages over Olympus E-M1

Less expensive
$748 vs $1099
Save money for lenses or accessories
In-camera panoramas
Yes vs No
Stitches multiple shots into a panoramic photo
NFC
Yes vs No
Simplifies pairing your camera with supported phones
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 1/320 sec
Reduce the effect of ambient light in flash shots
Shoots 24p video
Yes vs No
Gives your movies a big-screen feel
Lighter weight
287g vs 497g
Lighter weight
More pixels
20.2 vs 16.1 megapixels
Higher resolution photos
Shoots 60p video
Yes vs No
A faster framerate can give you more editing options
Has anti-aliasing filter
Filter vs No Filter
Reduces unsightly moiré in photos
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
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
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

Tilt-swivel screen
Neither provide
Tilt and swivel the screen for maximum shooting flexibility
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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Read E-M1 User Reviews

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Sony RX100 Mark III

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Review Excerpt

Exceptional rugged, weather-proof, professional build; Lightning fast contrast-detect AF, and phase-detect AF that makes Four Thirds lenses far more responsive; Tons of useful physical controls with immense customizability; Arguably the best image quality of any Micro Four Thirds camera we've tested to date; Large, sharp, high-resolution electronic viewfinder; Advanced Wi-Fi capabilities, including remote control shooting in PASM exposure modes.
Bigger and heavier than many other compact system cameras; Most expensive Micro Four Thirds camera on the market to date; Menu system and customization options have a steep learning curve; No optical low-pass filter means greater risk of moire; No built-in flash.
Read our Olympus E-M1 Review

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

The Competition

Compared to Olympus E-M5

Olympus E-M1

Olympus E-M5

$1099
4/3

Focus peaking
Fast startup

$900
4/3

Thinner
Shoots 60p video

Compare Olympus E-M1 vs Olympus E-M5

Sony RX100 III

Olympus E-M5

$748
1 inch

Focus peaking
In-camera panoramas

$900
4/3

Larger sensor
Bigger pixels

Compare Sony RX100 III vs Olympus E-M5

Compared to Sony RX100

Olympus E-M1

Sony RX100

$1099
4/3

Larger sensor
Eye-level viewfinder

$1074
1 inch

In-camera panoramas
Internal flash

Compare Olympus E-M1 vs Sony RX100

Sony RX100 III

Sony RX100

$748
1 inch

Eye-level viewfinder
Tiltable Screen

$1074
1 inch

More telephoto lens reach
Faster RAW shooting

Compare Sony RX100 III vs Sony RX100

Compared to Sony RX100 II

Olympus E-M1

Sony RX100 II

$1099
4/3

Larger sensor
Eye-level viewfinder

$598
1 inch

Less expensive
In-camera panoramas

Compare Olympus E-M1 vs 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

Compared to Canon G7X

Olympus E-M1

Canon G7X

$1099
4/3

Larger sensor
Eye-level viewfinder

$1239
1 inch

NFC
Internal flash

Compare Olympus E-M1 vs 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

Compared to Panasonic LX100

Olympus E-M1

Panasonic LX100

$1099
4/3

Touchscreen
Tiltable Screen

$598
4/3

Less expensive
Shoot 4K video

Compare Olympus E-M1 vs 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

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