• 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600
  • APS-C 366.6mm2
  • 24.1 megapixels
  • ISO 100 - 6400

Buy From

Differences

Olympus E-M5 advantages over Nikon D7100

  • 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
  • Thinner
    43 mm vs 76 mm
    Thinner
  • Lighter weight
    652g vs 1222g
    Lighter weight
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Wider angle kit lens
    24 mm vs 27 mm
    Capture more of the scene with the included lens
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    8.9 fps vs 5.8 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    9.0 fps vs 5.3 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    16 vs 5 shots
    Larger buffer for RAW shots (burst mode)

Nikon D7100 advantages over Olympus E-M5

  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Fast startup
    ~0.30 vs 1.1 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    1,256 vs 826 iso
    Take photos in low light with less noise
  • More dynamic range
    13.7 vs 12.3 evs
    Retain detail in highlight and shadows
  • Longer stills battery life
    More info 950 vs 360 shots
    Capture more photos
  • More telephoto lens reach
    158 mm vs 100 mm
    Capture objects farther away with the kit lens
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Higher-res screen
    307k vs 205k pixels
    More detail on the screen lets you judge focus and composition
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More viewfinder magnification
    0.63x vs 0.58x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    24.1 vs 16.1 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • 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

  • Focus peaking
    Neither provide
    Your camera will highlight what's in focus
  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • 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
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Your purchases support this site

Buy the Olympus E-M5

Your purchases support this site

Buy the Nikon D7100

Review Excerpt

  • Attractive body design; Well-built, weather-sealed body; Excellent image quality; Excellent image stabilization; Very fast autofocus.

  • Exposure compensation dial changes easily; Small buttons; No in-camera chromatic aberration correction; Bundled flash is weak; Video compression artifacts with rapidly-moving subjects.

  • Solid, ergonomic body design; Stunning, highly detailed photos, thanks to 24.1MP sensor upgrade and removal of optical low-pass filter; Cool 1.3x crop mode extends reach to nearly 2x the full-frame equivalent; Records Full 1080p HD video at up to 30fps with full-time AF; Many pro-level features packed into a consumer-friendly body at reasonable price.

  • Shallow buffer that hampers continuous burst shooting; AF slightly slower than average for its class; No real-time aperture control while in Movie mode (among other quirks); More noticeable moire patterns and aliasing artifacts (but only found when shooting fabrics with strong, distinct patterns).

The Competition

Compared to Canon 70D

Olympus E-M5
Canon 70D
  • $900
  • 4/3
  • In-Camera Image Stabilization
  • Thinner
  • $1149
  • APS-C
  • Larger sensor
  • Tilt-swivel screen
Nikon D7100
Canon 70D
  • $690
  • APS-C
  • Less expensive
  • Fast startup
  • $1149
  • APS-C
  • Tilt-swivel screen
  • Touchscreen

Compared to Olympus E-M1

Olympus E-M5
Olympus E-M1
  • $900
  • 4/3
  • Thinner
  • Shoots 60p video
  • $1099
  • 4/3
  • Focus peaking
  • Fast startup
Nikon D7100
Olympus E-M1
  • $690
  • APS-C
  • Less expensive
  • Larger sensor
  • $1099
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization

Compared to Panasonic G3

Olympus E-M5
Panasonic G3
  • $900
  • 4/3
  • In-Camera Image Stabilization
  • Higher effective ISO
  • $700
  • 4/3
  • Less expensive
  • Internal flash
Nikon D7100
Panasonic G3
  • $690
  • APS-C
  • Larger sensor
  • Fast startup
  • $700
  • 4/3
  • Touchscreen
  • Tiltable Screen

Compared to Olympus E-P5

Olympus E-M5
Olympus E-P5
  • $900
  • 4/3
  • Eye-level viewfinder
  • More telephoto lens reach
  • $1249
  • 4/3
  • Focus peaking
  • Built-in Wi-Fi
Nikon D7100
Olympus E-P5
  • $690
  • APS-C
  • Larger sensor
  • Eye-level viewfinder
  • $1249
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization

Compared to Panasonic GX7

Olympus E-M5
Panasonic GX7
  • $900
  • 4/3
  • Higher effective ISO
  • More telephoto lens reach
  • $648
  • 4/3
  • Less expensive
  • Focus peaking
Nikon D7100
Panasonic GX7
  • $690
  • APS-C
  • Larger sensor
  • Fast startup
  • $648
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
Compare Other Cameras?