Canon 5D Mark III vs Sony RX100 III

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Canon 5D Mark III vs Sony RX100 III

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35mm 864.0mm²
22.3 megapixels
ISO 100 - 25,600

Go in depth with our full Canon 5D Mark III Review.
See real-world photos taken with the 5D Mark III.
Compare Canon 5D Mark III image quality against competitors.
What’s the bottom line? Read our Canon 5D Mark III conclusion.

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 Canon 5D Mark IV
Compare 5D Mark III vs 5D Mark IV

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

Compare CANON 5D MARK IV vs SONY RX100 IV

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Differences

Canon 5D Mark III advantages over Sony RX100 III

Larger sensor
35mm vs 1 inch
More sensor area. Bigger is (generally) better.
Bigger pixels
~ 6.25 vs 2.41 microns
Better low-light and dynamic range (all else equal)
Fast startup
~0.50 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.
5D Mark III test data on DxO Mark RX100 III test data on DxO Mark

2,293 vs 495 iso
Take photos in low light with less noise
Longer stills battery life
More info

Longer stills battery life

Cameras with longer battery life can take more photos before exhausting their batteries.

Special note: The measurement standard for battery life stipulates that if a camera has an internal flash, it must be used for 50% of photos taken. For this reason, comparisons of one camera with an internal flash to another without will not be comparable

950 vs 320 shots
Capture more photos
Top deck display
Yes vs No
Check settings with a screen on top of the camera
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
0.71x vs 0.59x
Get a bigger view of the scene through the eye-level viewfinder
Dual card slots
Yes vs No
Gives you more storage flexibility
Headphone jack
Yes vs No
Monitor audio recording while you shoot video
Faster shutter
1/8000 vs 1/2000 sec
Shoot wide open in bright light
Higher extended ISO
102400 vs 25600 ISO
Higher extended ISO can give more low-light flexibility

Sony RX100 III advantages over Canon 5D Mark III

Less expensive
$748* vs $2299
Save money for lenses or accessories
Focus peaking
Peaker vs Non-peaker
Your camera will highlight what's in focus
In-Camera Image Stabilization
Yes vs No
Reduces the effects of camera shake at slower shutter speeds
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
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 76 mm
Thinner
Higher max flash sync
1/2000 vs 1/200 sec
Reduce the effect of ambient light in flash shots
Lighter weight
287g vs 950g
Lighter weight
Faster JPEG shooting
10.0 fps vs 6.0 fps
Faster JPEG shooting (burst mode)
Faster RAW shooting
6.7 fps vs 6.0 fps
Faster RAW shooting in burst mode
Bigger RAW buffer
26 vs 18 shots
Larger buffer for RAW shots (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
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

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

User reviews

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Sony RX100 Mark III

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Review Excerpt

Superb still and video image quality; Powerful, fast, and accurate AF system with loads of cross-type points, loads of configurability and great frame coverage; Rugged, weather-sealed body with great control layout and user-interface configurability.
Dynamic range is limited by noise in deep shadows; Somewhat heavy-handed noise suppression and sharpening at default settings. (Shooting RAW avoids both.); No AF illuminator.
Read our Canon 5D Mark III 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 Sony RX100

Canon 5D Mark III

Sony RX100

$2084
35mm

Larger sensor
Eye-level viewfinder

$1095
1 inch

Focus peaking
In-Camera Image Stabilization

Compare Canon 5D Mark III vs Sony RX100

Sony RX100 III

Sony RX100

$748
1 inch

Eye-level viewfinder
Tiltable Screen

$1095
1 inch

More telephoto lens reach
Faster RAW shooting

Compare Sony RX100 III vs Sony RX100

Compared to Canon 6D

Canon 5D Mark III

Canon 6D

$2084
35mm

More cross-type AF points
Less shutter lag

$1499
35mm

Less expensive
Built-in Wi-Fi

Compare Canon 5D Mark III vs Canon 6D

Sony RX100 III

Canon 6D

$748
1 inch

Focus peaking
Less expensive

$1499
35mm

Larger sensor
Bigger pixels

Compare Sony RX100 III vs Canon 6D

Compared to Sony RX100 II

Canon 5D Mark III

Sony RX100 II

$2084
35mm

Larger sensor
Eye-level viewfinder

$598
1 inch

Less expensive
Focus peaking

Compare Canon 5D Mark III 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

Canon 5D Mark III

Canon G7X

$2084
35mm

Larger sensor
Eye-level viewfinder

$1239
1 inch

Focus peaking
In-Camera Image Stabilization

Compare Canon 5D Mark III 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

Canon 5D Mark III

Panasonic LX100

$2084
35mm

Larger sensor
Bigger pixels

$598
4/3

Less expensive
Focus peaking

Compare Canon 5D Mark III 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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