• APS-C 332.3mm2
  • 18.0 megapixels
  • ISO 100 - 12,800
  • 4/3 226.2mm2
  • 20.4 megapixels
  • ISO 200 - 25,600

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Differences

Canon T4i advantages over Olympus E-M5 III

  • Less expensive
    $700 vs $1099
    Save money for lenses or accessories
  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.30 vs 3.36 microns
    Better low-light and dynamic range (all else equal)
  • Longer stills battery life
    More info 440 vs 310 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos

Olympus E-M5 III advantages over Canon T4i

  • 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
  • Shoot 4K video
    4K (DCI) vs 1080p
    Make sure you have a fast computer
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Thinner
    49 mm vs 78 mm
    Thinner
  • Newer
    2 years vs 10 years old
    Newer cameras often support more advanced features
  • More viewfinder magnification
    0.68x vs 0.53x
    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 JPEG shooting
    30.0 fps vs 4.8 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    30.0 fps vs 5.0 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    23 vs 6 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/32000 vs 1/4000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Tilt-swivel screen
    Both provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • On-sensor phase detect
    Both provide
    Usually improves live view and video AF performance
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • 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

  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • 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

Buy From

Your purchases support this site

Buy the Canon T4i

Your purchases support this site

Buy the Olympus E-M5 III

Review Excerpt

  • Excellent image quality; 9 cross-type AF points; Stereo microphones; Built-in touchscreen; Multi-shot modes.

  • Slow Live View and video autofocus; High ISO performance is unimproved; Below-average battery life; No dedicated AF illuminator.

  • Improved image quality; Very good dynamic range & high ISO performance for a modern MFT sensor; Very fast AF; Excellent image stabilization; 4K video recording; Weather-sealed build quality.

  • Below average battery life; Small size can be awkward with long, heavy lenses; One SD card slot.

The Competition

Compared to Canon T5i

Canon T4i
Canon T5i
  • $700
  • APS-C
  • More telephoto lens reach
  • $539
  • APS-C
  • Less expensive
  • Lighter weight
Olympus E-M5 III
Canon T5i
  • $966
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $539
  • APS-C
  • Less expensive
  • Larger sensor

Compared to Canon T3i

Canon T4i
Canon T3i
  • $700
  • APS-C
  • Touchscreen
  • Fast startup
  • $549
  • APS-C
Olympus E-M5 III
Canon T3i
  • $966
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $549
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Pentax K-30

Canon T4i
Pentax K-30
  • $700
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
  • $599
  • APS-C
  • Focus peaking
  • Larger sensor
Olympus E-M5 III
Pentax K-30
  • $966
  • 4/3
  • Tilt-swivel screen
  • Shoot 4K video
  • $599
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Pentax K-5 II

Canon T4i
Pentax K-5 II
  • $700
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
  • $750
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
Olympus E-M5 III
Pentax K-5 II
  • $966
  • 4/3
  • Focus peaking
  • Tilt-swivel screen
  • $750
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Panasonic G100

Canon T4i
Panasonic G100
  • $700
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $623
  • 4/3
  • Focus peaking
  • Less expensive
Olympus E-M5 III
Panasonic G100
  • $966
  • 4/3
  • In-Camera Image Stabilization
  • High resolution composite
  • $623
  • 4/3
  • Less expensive
  • In-camera panoramas
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