• 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600
  • 1/2.3 inch 28.1mm2
  • 14.5 megapixels
  • 7.30mm (35mm eq.)

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Differences

Olympus E-M1 advantages over Ricoh Theta S

  • Rear display
    Yes vs No
    Review photos on the back of the camera
  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    4/3 vs 1/2.3 inch
    More sensor area. Bigger is (generally) better.
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • RAW file ability
    Yes vs No
    Gives you more flexibility to develop your photos later
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 350 vs 260 shots
    Capture more photos
  • Manual focus
    Yes vs No
    AF is for the weak. Real photographers focus manually.
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Faster shutter
    1/16000 vs 1/6400 sec
    Shoot wide open in bright light
  • Higher extended ISO
    25600 vs 1600 ISO
    Higher extended ISO can give more low-light flexibility

Ricoh Theta S advantages over Olympus E-M1

  • Less expensive
    $350 vs $1300 (MSRP)
    Save money for lenses or accessories
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Thinner
    22 mm vs 63 mm
    Thinner
  • Lighter weight
    125g vs 497g
    Lighter weight

Similarities

Common Strengths

  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • 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
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Buy the Olympus E-M1
Body Only
  • Body Only
  • Kit with 12-40mm Lens
All E-M1 Deals

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Buy the Ricoh Theta S
Ricoh Theta S (Black)

Review Excerpt

  • Exceptional rugged, weather-proof, professional build; Lightning fast contrast-detect AF, and phase-detect AF that makes Four Thirds lenses far more responsive; Tons of useful physical controls with immense customizability; Arguably the best image quality of any Micro Four Thirds camera we've tested to date; Large, sharp, high-resolution electronic viewfinder; Advanced Wi-Fi capabilities, including remote control shooting in PASM exposure modes.

  • Bigger and heavier than many other compact system cameras; Most expensive Micro Four Thirds camera on the market to date; Menu system and customization options have a steep learning curve; No optical low-pass filter means greater risk of moire; No built-in flash.

  • Read our Olympus E-M1 Review

  • 360-degree spherical panoramas at the click of a button; Puts you back in the moment like no other camera; Good ergonomics and control layout; Great still image quality, and can shoot videos too; Upload panoramas to Google Street View

  • Very reliant on your smartphone or tablet; Battery and storage can't be replaced or upgraded; Handheld shots suffer from Gigantic Hand Syndrome; Hard to get yourself out of the shot; Video image quality is only modest; Interval timer has a long shot delay

  • Read our Ricoh Theta S Express Review

The Competition

Compared to Olympus E-M5

Olympus E-M1
Olympus E-M5
  • $1099
  • 4/3
  • Focus peaking
  • Fast startup
  • $900
  • 4/3
  • Thinner
  • Shoots 60p video

Compare Olympus E-M1 vs Olympus E-M5

Ricoh Theta S
Olympus E-M5
  • $290
  • 1/2.3 inch
  • In-camera panoramas
  • Built-in Wi-Fi
  • $900
  • 4/3
  • Rear display
  • Larger sensor

Compare Ricoh Theta S vs Olympus E-M5

Compared to Panasonic G5

Olympus E-M1
Panasonic G5
  • $1099
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $500
  • 4/3
  • Internal flash
  • Shoots 60p video

Compare Olympus E-M1 vs Panasonic G5

Ricoh Theta S
Panasonic G5
  • $290
  • 1/2.3 inch
  • In-camera panoramas
  • Built-in Wi-Fi
  • $500
  • 4/3
  • Rear display
  • Larger sensor

Compare Ricoh Theta S vs Panasonic G5

Compared to Panasonic GH3

Olympus E-M1
Panasonic GH3
  • $1099
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $798
  • 4/3
  • Tilt-swivel screen
  • Longer stills battery life

Compare Olympus E-M1 vs Panasonic GH3

Ricoh Theta S
Panasonic GH3
  • $290
  • 1/2.3 inch
  • Less expensive
  • In-camera panoramas
  • $798
  • 4/3
  • Rear display
  • Larger sensor

Compare Ricoh Theta S vs Panasonic GH3

Compared to Panasonic GH4

Olympus E-M1
Panasonic GH4
  • $1099
  • 4/3
  • In-Camera Image Stabilization
  • On-sensor phase detect
  • $898
  • 4/3
  • Tilt-swivel screen
  • Shoot 4K video

Compare Olympus E-M1 vs Panasonic GH4

Ricoh Theta S
Panasonic GH4
  • $290
  • 1/2.3 inch
  • In-camera panoramas
  • Thinner
  • $898
  • 4/3
  • Rear display
  • Focus peaking

Compare Ricoh Theta S vs Panasonic GH4

Compared to Panasonic G7

Olympus E-M1
Panasonic G7
  • $1099
  • 4/3
  • In-Camera Image Stabilization
  • Fast startup
  • $498
  • 4/3
  • Tilt-swivel screen
  • Shoot 4K video

Compare Olympus E-M1 vs Panasonic G7

Ricoh Theta S
Panasonic G7
  • $290
  • 1/2.3 inch
  • Thinner
  • $498
  • 4/3
  • Rear display
  • Focus peaking

Compare Ricoh Theta S vs Panasonic G7

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