• 35mm 864.0mm2
  • 30.4 megapixels
  • ISO 100 - 32,000
  • 4/3 226.2mm2
  • 16.1 megapixels
  • ISO 200 - 25,600

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Differences

Canon 5D Mark IV advantages over Olympus E-M10 III

  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 5.36 vs 3.78 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.50 vs 1.0 sec
    Faster startup lets you catch the moment
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 900 vs 330 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
  • Higher-res screen
    540k vs 346k pixels
    More detail on the screen lets you judge focus and composition
  • More viewfinder magnification
    0.71x vs 0.62x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    30.4 vs 16.1 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Higher extended ISO
    102400 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Olympus E-M10 III advantages over Canon 5D Mark IV

  • Less expensive
    $599 vs $3549
    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
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    49 mm vs 75 mm
    Thinner
  • Newer
    14 months vs 2 years old
    Newer cameras often support more advanced features
  • 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
    8.6 fps vs 7.0 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    8.6 fps vs 7.0 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    33 vs 19 shots
    Larger buffer for RAW shots (burst mode)
  • Faster shutter
    1/16000 vs 1/8000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Shoot 4K video
    Both provide
    Make sure you have a fast computer
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • 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
  • Slow-motion videos
    Both provide
    Shoot slow-motion videos

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
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity

User reviews

Buy From

Your purchases support this site

Buy the Canon 5D Mark IV

Your purchases support this site

Buy the Olympus E-M10 III

Review Excerpt

  • Superb image quality from RAW files; Improved dynamic range; Excellent high ISO performance; Fast 7fps burst rate with unlimited JPEG buffer; High-quality cinema 4K video; Built-in Wi-Fi; Dual Pixel CMOS AF is very good.

  • JPEG files look soft at default settings; 1/200s flash sync; 4K video codec is cumbersome; 29:59 continuous video recording limit.

  • Superbly-built, comfortable and compact body; Pairs beautifully with pancake kit lens; Excellent image quality; Excellent performance in most respects; Great single-shot autofocus; Really nice viewfinder and touch-screen display; Friendlier user interface courts amateurs.

  • Some controls are a bit small and tightly-packed; Hand grips are still a bit modestly-sized for larger lenses; Continuous and video autofocus just isn't up to snuff; New user interface can feel limiting to advanced photographers; Underwhelming battery life.

The Competition

Compared to Canon 5D Mark III

Canon 5D Mark IV
Canon 5D Mark III
  • $2799
  • 35mm
  • Shoot 4K video
  • Touchscreen
  • $2520
  • 35mm
  • Less expensive
  • Bigger pixels
Olympus E-M10 III
Canon 5D Mark III
  • $499
  • 4/3
  • Focus peaking
  • Less expensive
  • $2520
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Nikon D810

Canon 5D Mark IV
Nikon D810
  • $2799
  • 35mm
  • Shoot 4K video
  • Touchscreen
  • $2797
  • 35mm
  • Longer stills battery life
  • Internal flash
Olympus E-M10 III
Nikon D810
  • $499
  • 4/3
  • Focus peaking
  • Less expensive
  • $2797
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Olympus E-M10 II

Canon 5D Mark IV
Olympus E-M10 II
  • $2799
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $442
  • 4/3
  • Less expensive
  • Focus peaking
Olympus E-M10 III
Olympus E-M10 II
  • $499
  • 4/3
  • Shoot 4K video
  • Newer
  • $442
  • 4/3
  • Less expensive

Compared to Pentax K-1

Canon 5D Mark IV
Pentax K-1
  • $2799
  • 35mm
  • Shoot 4K video
  • Touchscreen
  • $1897
  • 35mm
  • Less expensive
  • Focus peaking
Olympus E-M10 III
Pentax K-1
  • $499
  • 4/3
  • Less expensive
  • Shoot 4K video
  • $1897
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Panasonic GX85

Canon 5D Mark IV
Panasonic GX85
  • $2799
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $598
  • 4/3
  • Less expensive
  • Focus peaking
Olympus E-M10 III
Panasonic GX85
  • $499
  • 4/3
  • More telephoto lens reach
  • Higher max flash sync
  • $598
  • 4/3
  • Less expensive
  • In-camera panoramas
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