• 35mm 855.6mm2
  • 24.3 megapixels
  • ISO 100 - 25600
  • $1873 Average Retail $2000 MSRP
  • 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25600
  • $798 Average Retail $800 MSRP

Buy From

Advantages

Sony A7 over Olympus E-M10

  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • More pixels
    24.3 vs 16.1 megapixels
    Higher resolution photos
  • On-sensor phase detect
    Yes vs No
    Might improve live view and video AF performance
  • External Mic
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • 24p
    Yes vs No
    Gives your movies a big-screen feel
  • Higher boost ISO
    51200 vs 25600 ISO
    Higher boost ISO can give more low-light flexibility
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light

Olympus E-M10 over Sony A7

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Lens zoom ratio
    3.0x vs 2.5x
    Zooming is easier than walking
  • Fast startup
    1.30 vs 2.10 sec
    Faster startup lets you catch the moment
  • Touchscreen
    Touch vs No touch
    Love or hate them, they can be useful
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Lighter weight
    515g vs 769g
    Lighter weight
  • Longer shutter
    60 vs 30 sec
    Long exposures for night shots

Review Excerpt

  • Incredibly small body for a fully-featured, full-frame camera; Very high resolution; Hybrid autofocus is reasonably fast and confident; Significantly better burst-shooting performance than A7R; Excellent image quality even at very high sensitivities; Faster x-sync than A7R; Accepts existing Alpha-mount and E-mount lenses, and can optionally crop to APS-C image circle.

  • Grass-is-greener syndrome when compared to its higher-res sibling; Moderate performance; Loud shutter (but electronic first-curtain helps); Mediocre battery life when using electronic viewfinder; Weak low-light autofocus considering its price; Limited selection of native Sony FE lenses.

  • Great image quality especially from RAW files; Excellent dynamic range for a Four Thirds sensor; Very good high ISO performance; Realistic colors and excellent hue accuracy; Built-in Wi-Fi with remote control and sharing features; Improved HD video; Lightweight and very portable; Built-in pop-up flash; Minimal EVF lag time.

  • Contrast-Detect AF struggles with small and low-contrast subjects; Mediocre battery life; No external microphone or headphone jack; Mediocre burst speed with continuous AF; No weather sealing; Heavy-handed high ISO noise reduction.

The Competition

Compared to Panasonic G6

Sony A7
Panasonic G6
  • $1873
  • 35mm
  • Larger sensor
  • Higher max flash sync
  • $699
  • 4/3
  • Lens selection
  • Lens zoom ratio
Olympus E-M10
Panasonic G6
  • $798
  • 4/3
  • Higher max flash sync
  • $699
  • 4/3
  • External Mic
  • 24p

Compared to Samsung Galaxy NX

Sony A7
Samsung Galaxy NX
  • $1873
  • 35mm
  • Lens selection
  • Larger sensor
  • $1249
  • APS-C
  • Lens zoom ratio
  • Touchscreen
Olympus E-M10
Samsung Galaxy NX
  • $798
  • 4/3
  • Lens selection
  • Tiltable Screen
  • $1249
  • APS-C
  • Larger sensor
  • More pixels

Compared to Panasonic GX7

Sony A7
Panasonic GX7
  • $1873
  • 35mm
  • Larger sensor
  • More pixels
  • $948
  • 4/3
  • Lens selection
  • Lens zoom ratio
Olympus E-M10
Panasonic GX7
  • $798
  • 4/3
  • Bigger RAW buffer
  • $948
  • 4/3
  • Fast startup
  • 24p

Compared to Fujifilm X-T1

Sony A7
Fujifilm X-T1
  • $1873
  • 35mm
  • Larger sensor
  • More pixels
  • $1649
  • APS-C
  • Lens zoom ratio
  • Fast startup
Olympus E-M10
Fujifilm X-T1
  • $798
  • 4/3
  • Lens selection
  • Touchscreen
  • $1649
  • APS-C
  • Larger sensor
  • On-sensor phase detect

Compared to Sony A6000

Sony A7
Sony A6000
  • $1873
  • 35mm
  • Larger sensor
  • Higher max flash sync
  • $781
  • APS-C
  • Lens zoom ratio
  • Wider angle lens
Olympus E-M10
Sony A6000
  • $798
  • 4/3
  • Lens selection
  • Fast startup
  • $781
  • APS-C
  • Larger sensor
  • Wider angle lens
Compare Other Cameras?
  1. Welcome

    This is our newly designed camera comparison feature!

    Would you like to take a quick tour?

  2. At a Glance

    Here are a few features that give an at-a-glance view of the cameras.

  3. Purchase from our trusted partners

    Purchasing cameras (or any other products) through our trusted retailers helps support this content!

  4. Comparative Advantages

    These are what we think are the key advantages of each camera over the other.

  5. Review Excerpts

    What you see here is an excerpt of the pros and cons for these cameras from our reviews.

    You can click to see the review page for each camera, or ask us to review them if we haven’t already

  6. The Competition

    Here are some other competitors that you might be interested in.

  7. A Competitor, In Brief

    This is a brief summary of the comparison.

    Click to view the full analysis!

  8. Choose Another Matchup

    Click on a camera name or manufacturer to choose a different camera to compare.