• 4/3 224.9mm2
  • 10.2 megapixels
  • ISO 160 - 51,200
  • 4/3 226.2mm2
  • 20.4 megapixels
  • ISO 200 - 25,600

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Differences

Panasonic GH5S advantages over Olympus E-M1 Mark III

  • Less expensive
    $1998* vs $2499
    Save money for lenses or accessories
  • Bigger pixels
    ~ 4.51 vs 3.36 microns
    Better low-light and dynamic range (all else equal)
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Higher extended ISO
    204800 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Olympus E-M1 Mark III advantages over Panasonic GH5S

  • 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
  • Longer video battery life
    90 vs 60 minutes
    Capture more video
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Newer
    Brand new vs 2 years old
    Newer cameras often support more advanced features
  • More pixels
    20.4 vs 10.2 megapixels
    Higher resolution photos
  • Faster shutter
    1/32000 vs 1/16000 sec
    Shoot wide open in bright light

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
  • Dual card slots
    Both provide
    Gives you more storage flexibility
  • Headphone jack
    Both provide
    Monitor audio recording while you shoot video
  • 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
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera

User reviews

Buy From

Your purchases support this site

Buy the Olympus E-M1 Mark III

Review Excerpt

  • Excellent video quality; Very good high ISO performance; Cinema 4K & UHD video up to 60p; Full HD up to 240p; 10-bit internal video recording; Tons of features & options for advanced/pro videographers.

  • 10MP resolution is limiting for still photos; No in-body image stabilization; Slower AF than GH5; Buffer clearing could be faster; No 6K Photo features due to sensor resolution.

The Competition

Compared to Olympus E-M1 II

Panasonic GH5S
Olympus E-M1 II
  • $2165
  • 4/3
  • Bigger pixels
  • Built-in Bluetooth
  • $1366
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization
Olympus E-M1 Mark III
Olympus E-M1 II
  • $1799
  • 4/3
  • Newer
  • $1366
  • 4/3
  • Less expensive

Compared to Panasonic GH5

Panasonic GH5S
Panasonic GH5
  • $2165
  • 4/3
  • Slower slow-motion
  • Bigger pixels
  • $1298
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization
Olympus E-M1 Mark III
Panasonic GH5
  • $1799
  • 4/3
  • High resolution composite
  • Longer video battery life
  • $1298
  • 4/3
  • Less expensive
  • Built-in Bluetooth

Compared to Panasonic G9

Panasonic GH5S
Panasonic G9
  • $2165
  • 4/3
  • Slower slow-motion
  • Bigger pixels
  • $1198
  • 4/3
  • In-Camera Image Stabilization
  • High resolution composite
Olympus E-M1 Mark III
Panasonic G9
  • $1799
  • 4/3
  • Longer video battery life
  • On-sensor phase detect
  • $1198
  • 4/3
  • Less expensive
  • Built-in Bluetooth

Compared to Panasonic G95

Panasonic GH5S
Panasonic G95
  • $2165
  • 4/3
  • Slower slow-motion
  • Bigger pixels
  • $1198
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization
Olympus E-M1 Mark III
Panasonic G95
  • $1799
  • 4/3
  • High resolution composite
  • On-sensor phase detect
  • $1198
  • 4/3
  • Less expensive
  • In-camera panoramas

Compared to Olympus E-M5 III

Panasonic GH5S
Olympus E-M5 III
  • $2165
  • 4/3
  • Slower slow-motion
  • Bigger pixels
  • $999
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization
Olympus E-M1 Mark III
Olympus E-M5 III
  • $1799
  • 4/3
  • Longer video battery life
  • Dual card slots
  • $999
  • 4/3
  • Less expensive
  • Built-in Bluetooth
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