• 35mm 864.0mm2
  • 22.3 megapixels
  • ISO 100 - 25,600
  • 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600

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Differences

Canon 5D Mark III advantages over Olympus E-PL5

  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • Bigger pixels
    ~ 6.25 vs 3.75 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.50 vs 0.7 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    2,293 vs 889 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 950 vs 360 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
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Higher-res screen
    348k vs 154k pixels
    More detail on the screen lets you judge focus and composition
  • Less shutter lag
    0.12 vs 0.22 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    22.3 vs 16.1 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Bigger JPEG buffer
    63 vs 15 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    102400 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Olympus E-PL5 advantages over Canon 5D Mark III

  • Less expensive
    $329 vs $3399
    Save money for lenses or accessories
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Thinner
    38 mm vs 76 mm
    Thinner
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    8.1 fps vs 6.0 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    8.0 fps vs 6.0 fps
    Faster RAW shooting in burst mode

Similarities

Common Strengths

  • HDMI out
    Both provide
    Use an external screen to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Focus peaking
    Neither provide
    Your camera will highlight what's in focus
  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • 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
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Your purchases support this site

Buy the Canon 5D Mark III

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.

  • Excellent image quality with good color and dynamic range; Great high ISO performance for its class; Extremely speedy performer, with fast and accurate autofocus on stationary subjects; Lightweight, compact and ergonomic design; Touchscreen LCD that tilts all the way forward for taking self portraits; Tons of advanced functions and customizable options.

  • Confusing and frustrating menu system takes hours to master; AF isn't optimal for taking fast-motion action shots; LCD viewfinding suffers under direct sunlight; Mediocre HD video quality; No built-in flash (but a small external flash is included).

The Competition

Compared to Canon 6D

Canon 5D Mark III
Canon 6D
  • $2824
  • 35mm
  • More cross-type AF points
  • Less shutter lag
  • $1699
  • 35mm
  • Less expensive
  • Built-in Wi-Fi
Olympus E-PL5
Canon 6D
  • $329
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization
  • $1699
  • 35mm
  • Larger sensor
  • Eye-level viewfinder

Compared to Canon 5D Mark IV

Canon 5D Mark III
Canon 5D Mark IV
  • $2824
  • 35mm
  • Bigger pixels
  • $3582
  • 35mm
  • Shoot 4K video
  • Touchscreen
Olympus E-PL5
Canon 5D Mark IV
  • $329
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization
  • $3582
  • 35mm
  • Larger sensor
  • Eye-level viewfinder

Compared to Sony A850

Canon 5D Mark III
Sony A850
  • $2824
  • 35mm
  • Lens selection
  • Higher effective ISO
  • $2219
  • 35mm
  • In-Camera Image Stabilization
Olympus E-PL5
Sony A850
  • $329
  • 4/3
  • Lens selection
  • Touchscreen
  • $2219
  • 35mm
  • Larger sensor
  • Eye-level viewfinder

Compared to Sony A99

Canon 5D Mark III
Sony A99
  • $2824
  • 35mm
  • Lens selection
  • Fast startup
  • $1998
  • 35mm
  • Less expensive
  • Tilt-swivel screen
Olympus E-PL5
Sony A99
  • $329
  • 4/3
  • Lens selection
  • Less expensive
  • $1998
  • 35mm
  • Tilt-swivel screen
  • Focus peaking

Compared to Olympus E-PM2

Canon 5D Mark III
Olympus E-PM2
  • $2824
  • 35mm
  • Larger sensor
  • Eye-level viewfinder
  • $448
  • 4/3
  • In-Camera Image Stabilization
  • Touchscreen
Olympus E-PL5
Olympus E-PM2
  • $329
  • 4/3
  • Tiltable Screen
  • $448
  • 4/3
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