• APS-C 332.3mm2
  • 18.0 megapixels
  • ISO 100 - 6400
  • 4/3 226.2mm2
  • 20.3 megapixels
  • ISO 200 - 25,600

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Differences

Canon T3i advantages over Olympus E-M10 IV

  • Tilt-swivel screen
    Tilt-swivel vs tilt-only
    Tilt and swivel the screen for maximum shooting flexibility
  • 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)
  • More telephoto lens reach
    216 mm vs 84 mm
    Capture objects farther away with the kit lens
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos

Olympus E-M10 IV advantages over Canon T3i

  • 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
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • 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 79 mm
    Thinner
  • Newer
    4 years vs 14 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
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/16000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    25600 vs 12800 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • 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

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Buy the Canon T3i

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Buy the Olympus E-M10 IV
Body Only
  • Body Only
  • Kit with 14-42mm Lens
All E-M10 IV Deals

Review Excerpt

  • Excellent image quality; Good grip; Full HD video recording; Swiveling LCD; Very fast autofocus; HDMI output.

  • Slow frame rate for sports shooting; Tendency to overexpose in bright sunlight; Live View AF is slow; No microfocus adjustment.

  • Read our Canon T3i Full Review

The Competition

Compared to Nikon D7000

Canon T3i
Nikon D7000
  • $549
  • APS-C
  • Less expensive
  • Tilt-swivel screen
  • $699
  • APS-C
  • Larger sensor
  • Fast startup

Compare Canon T3i vs Nikon D7000

Olympus E-M10 IV
Nikon D7000
  • $666
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $699
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M10 IV vs Nikon D7000

Compared to Pentax K-5

Canon T3i
Pentax K-5
  • $549
  • APS-C
  • Tilt-swivel screen
  • More telephoto lens reach
  • $800
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization

Compare Canon T3i vs Pentax K-5

Olympus E-M10 IV
Pentax K-5
  • $666
  • 4/3
  • Focus peaking
  • Shoot 4K video
  • $800
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M10 IV vs Pentax K-5

Compared to Canon T4i

Canon T3i
Canon T4i
  • $549
  • APS-C
  • $579
  • APS-C
  • Touchscreen
  • Fast startup

Compare Canon T3i vs Canon T4i

Olympus E-M10 IV
Canon T4i
  • $666
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $579
  • APS-C
  • Larger sensor
  • Tilt-swivel screen

Compare Olympus E-M10 IV vs Canon T4i

Compared to Olympus E-M5 III

Canon T3i
Olympus E-M5 III
  • $549
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $924
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization

Compare Canon T3i vs Olympus E-M5 III

Olympus E-M10 IV
Olympus E-M5 III
  • $666
  • 4/3
  • Less expensive
  • Longer video battery life
  • $924
  • 4/3
  • Tilt-swivel screen
  • High resolution composite

Compare Olympus E-M10 IV vs Olympus E-M5 III

Compared to Panasonic G100

Canon T3i
Panasonic G100
  • $549
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $599
  • 4/3
  • Focus peaking
  • Shoot 4K video

Compare Canon T3i vs Panasonic G100

Olympus E-M10 IV
Panasonic G100
  • $666
  • 4/3
  • In-Camera Image Stabilization
  • More telephoto lens reach
  • $599
  • 4/3
  • Less expensive
  • Tilt-swivel screen

Compare Olympus E-M10 IV vs Panasonic G100

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