• 4/3 226.2mm2
  • 20.4 megapixels
  • ISO 200 - 25,600
  • 4/3 224.9mm2
  • 20.3 megapixels
  • ISO 200 - 25,600

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Differences

Olympus E-M1 Mark III advantages over Panasonic G100

  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Faster shutter
    1/32000 vs 1/16000 sec
    Shoot wide open in bright light

Panasonic G100 advantages over Olympus E-M1 Mark III

  • Less expensive
    $548 vs $2499
    Save money for lenses or accessories
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • More dots on screen
    1840k vs 1037k dots
    Can mean greater resolution or a brighter screen
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • 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
  • 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
  • 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

  • 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

User reviews

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Your purchases support this site

Buy the Olympus E-M1 Mark III

Your purchases support this site

Buy the Panasonic G100

Review Excerpt

The Competition

Compared to Olympus E-M1 II

Olympus E-M1 Mark III
Olympus E-M1 II
  • $1649
  • 4/3
  • Newer
  • $1324
  • 4/3
  • Less expensive
Panasonic G100
Olympus E-M1 II
  • $597
  • 4/3
  • Less expensive
  • In-camera panoramas
  • $1324
  • 4/3
  • In-Camera Image Stabilization
  • High resolution composite

Compared to Panasonic G95

Olympus E-M1 Mark III
Panasonic G95
  • $1649
  • 4/3
  • High resolution composite
  • On-sensor phase detect
  • $831
  • 4/3
  • Less expensive
  • In-camera panoramas
Panasonic G100
Panasonic G95
  • $597
  • 4/3
  • Less expensive
  • Thinner
  • $831
  • 4/3
  • In-Camera Image Stabilization
  • More telephoto lens reach

Compared to Olympus E-M5 III

Olympus E-M1 Mark III
Olympus E-M5 III
  • $1649
  • 4/3
  • Longer video battery life
  • Dual card slots
  • $924
  • 4/3
  • Less expensive
  • Built-in Bluetooth
Panasonic G100
Olympus E-M5 III
  • $597
  • 4/3
  • Less expensive
  • In-camera panoramas
  • $924
  • 4/3
  • In-Camera Image Stabilization
  • High resolution composite

Compared to Olympus E-M10 IV

Olympus E-M1 Mark III
Olympus E-M10 IV
  • $1649
  • 4/3
  • Tilt-swivel screen
  • High resolution composite
  • $666
  • 4/3
  • Less expensive
  • Built-in Bluetooth
Panasonic G100
Olympus E-M10 IV
  • $597
  • 4/3
  • Less expensive
  • Tilt-swivel screen
  • $666
  • 4/3
  • In-Camera Image Stabilization
  • More telephoto lens reach

Compared to OM System OM-1

Olympus E-M1 Mark III
OM System OM-1
  • $1649
  • 4/3
  • $2200
  • 4/3
  • Newer
  • Higher-res screen
Panasonic G100
OM System OM-1
  • $597
  • 4/3
  • In-camera panoramas
  • Built-in Bluetooth
  • $2200
  • 4/3
  • In-Camera Image Stabilization
  • High resolution composite
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