• 35mm 864.0mm2
  • 21.1 megapixels
  • ISO 100 - 6400
  • 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600

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Differences

Canon 5D Mark II advantages over Olympus E-M10

  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 6.41 vs 3.75 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.40 vs 1.3 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    1,815 vs 884 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 850 vs 320 shots
    Capture more photos
  • More telephoto lens reach
    105 mm vs 84 mm
    Capture objects farther away with the kit lens
  • 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
  • More viewfinder magnification
    0.71x vs 0.58x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    21.1 vs 16.1 megapixels
    Higher resolution photos
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Wider angle kit lens
    24 mm vs 28 mm
    Capture more of the scene with the included lens
  • Bigger JPEG buffer
    75 vs 19 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light

Olympus E-M10 advantages over Canon 5D Mark II

  • Less expensive
    $699 vs $2699
    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
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    45 mm vs 75 mm
    Thinner
  • Newer
    5 years vs 10 years old
    Newer cameras often support more advanced features
  • Lighter weight
    515g vs 1588g
    Lighter weight
  • 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
    8.1 fps vs 3.9 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    8.1 fps vs 3.9 fps
    Faster RAW shooting in burst mode

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • HDMI out
    Both provide
    Use HDMI output 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

  • 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
  • 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
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Your purchases support this site

Buy the Canon 5D Mark II

Your purchases support this site

Buy the Olympus E-M10

Review Excerpt

  • Great image quality especially from RAW files; Excellent dynamic range for a Four Thirds sensor; Very good high ISO performance; Realistic colors and excellent hue accuracy; Built-in Wi-Fi with remote control and sharing features; Improved HD video; Lightweight and very portable; Built-in pop-up flash; Minimal EVF lag time.

  • Contrast-Detect AF struggles with small and low-contrast subjects; Mediocre battery life; No external microphone or headphone jack; Mediocre burst speed with continuous AF; No weather sealing; Heavy-handed high ISO noise reduction.

The Competition

Compared to Sony A900

Canon 5D Mark II
Sony A900
  • $2598
  • 35mm
  • Lens selection
  • Higher effective ISO
  • $3000
  • 35mm
  • In-Camera Image Stabilization
  • More pixels
Olympus E-M10
Sony A900
  • $484
  • 4/3
  • Lens selection
  • Focus peaking
  • $3000
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Nikon D3X

Canon 5D Mark II
Nikon D3X
  • $2598
  • 35mm
  • Less expensive
  • Shoots 1080p video
  • $6999
  • 35mm
  • Fast startup
  • More dynamic range
Olympus E-M10
Nikon D3X
  • $484
  • 4/3
  • Focus peaking
  • Less expensive
  • $6999
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Sony A850

Canon 5D Mark II
Sony A850
  • $2598
  • 35mm
  • Lens selection
  • Higher effective ISO
  • $2219
  • 35mm
  • In-Camera Image Stabilization
  • More pixels
Olympus E-M10
Sony A850
  • $484
  • 4/3
  • Lens selection
  • Focus peaking
  • $2219
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Panasonic GX7

Canon 5D Mark II
Panasonic GX7
  • $2598
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $497
  • 4/3
  • Focus peaking
  • Less expensive
Olympus E-M10
Panasonic GX7
  • $484
  • 4/3
  • Higher effective ISO
  • Lacks anti-aliasing filter
  • $497
  • 4/3
  • In-camera panoramas
  • Fast startup

Compared to Olympus E-M10 II

Canon 5D Mark II
Olympus E-M10 II
  • $2598
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $516
  • 4/3
  • Less expensive
  • Focus peaking
Olympus E-M10
Olympus E-M10 II
  • $484
  • 4/3
  • $516
  • 4/3
  • Less expensive
  • Fast startup
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