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

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Differences

Nikon D7100 advantages over Olympus E-PL9

  • Larger sensor
    APS-C vs 4/3
    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
  • Longer stills battery life
    More info 950 vs 350 shots
    Capture more photos
  • More telephoto lens reach
    158 mm vs 84 mm
    Capture objects farther away with the kit lens
  • 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
  • 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

Olympus E-PL9 advantages over Nikon D7100

  • 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 (UHD) vs 1080p
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Thinner
    39 mm vs 76 mm
    Thinner
  • Newer
    6 years vs 11 years old
    Newer cameras often support more advanced features
  • Lighter weight
    473g vs 1222g
    Lighter weight
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    8.6 fps vs 5.8 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    Unlimited vs 12 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    8.6 fps vs 5.3 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    14 vs 5 shots
    Larger buffer for RAW shots (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/16000 vs 1/8000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • 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

  • 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 GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance

User reviews

Buy From

Your purchases support this site

Buy the Nikon D7100

Your purchases support this site

Buy the Olympus E-PL9

Review Excerpt

  • 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

Nikon D7100
Canon 70D
  • $810
  • APS-C
  • Less expensive
  • Fast startup
  • $999
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
Olympus E-PL9
Canon 70D
  • $700
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $999
  • APS-C
  • Tilt-swivel screen
  • Larger sensor

Compared to Pentax K-3

Nikon D7100
Pentax K-3
  • $810
  • APS-C
  • Fast startup
  • Longer stills battery life
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
Olympus E-PL9
Pentax K-3
  • $700
  • 4/3
  • Less expensive
  • Shoot 4K video
  • $699
  • APS-C
  • Larger sensor
  • Eye-level viewfinder

Compared to Nikon D5300

Nikon D7100
Nikon D5300
  • $810
  • APS-C
  • Fast startup
  • Longer stills battery life
  • $549
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Olympus E-PL9
Nikon D5300
  • $700
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $549
  • APS-C
  • Larger sensor
  • Tilt-swivel screen

Compared to Panasonic GX85

Nikon D7100
Panasonic GX85
  • $810
  • APS-C
  • Larger sensor
  • Fast startup
  • $598
  • 4/3
  • Less expensive
  • Focus peaking
Olympus E-PL9
Panasonic GX85
  • $700
  • 4/3
  • Built-in Bluetooth
  • Longer stills battery life
  • $598
  • 4/3
  • Eye-level viewfinder
  • Lacks anti-aliasing filter

Compared to Olympus E-PL8

Nikon D7100
Olympus E-PL8
  • $810
  • APS-C
  • Larger sensor
  • Eye-level viewfinder
  • $599
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
Olympus E-PL9
Olympus E-PL8
  • $700
  • 4/3
  • Shoot 4K video
  • In-camera panoramas
  • $599
  • 4/3
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