• APS-C 369.7mm2
  • 16.3 megapixels
  • ISO 100 - 12,800
  • 4/3 226.2mm2
  • 20.3 megapixels
  • ISO 200 - 25,600

Buy From

Differences

Pentax K-5 IIs advantages over Olympus E-M10 IV

  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.81 vs 3.36 microns
    Better low-light and dynamic range (all else equal)
  • 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
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Olympus E-M10 IV advantages over Pentax K-5 IIs

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Shoot 4K video
    4K (DCI) vs 1080p
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • 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
    49 mm vs 73 mm
    Thinner
  • Newer
    4 years vs 12 years old
    Newer cameras often support more advanced features
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Lighter weight
    383g vs 740g
    Lighter weight
  • More pixels
    20.3 vs 16.3 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • 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

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • 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
  • 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
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video

User reviews

Buy From

Your purchases support this site

Buy the Pentax K-5 IIs
Body Only
All K-5 IIs Deals

Your purchases support this site

Buy the Olympus E-M10 IV
Body Only
  • Body Only
  • Kit with 14-42mm Lens
All E-M10 IV Deals

Review Excerpt

  • Noticeably better sharpness than standard K-5 II; Compact yet control-rich body packs in the features; Updated autofocus system focuses in near-darkness; Fully weather-sealed; Very good dynamic range; In-body image stabilization; Dual-axis level with horizon correction.

  • Prone to moire, aliasing, and false color artifacts; Can seem intimidating at first; Fewer autofocus points than competitors; Doesn't take advantage of high-speed UHS-I flash cards; Movie feature set is very dated and file sizes huge.

  • Read our Pentax K-5 IIs Review

The Competition

Compared to Sony A35

Pentax K-5 IIs
Sony A35
  • $497
  • APS-C
  • Lens selection
  • Fast startup
  • $567
  • APS-C
  • Less expensive
  • In-camera panoramas

Compare Pentax K-5 IIs vs Sony A35

Olympus E-M10 IV
Sony A35
  • $666
  • 4/3
  • Lens selection
  • Focus peaking
  • $567
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M10 IV vs Sony A35

Compared to Sony A57

Pentax K-5 IIs
Sony A57
  • $497
  • APS-C
  • Lens selection
  • Higher effective ISO
  • $800
  • APS-C
  • Less expensive
  • Focus peaking

Compare Pentax K-5 IIs vs Sony A57

Olympus E-M10 IV
Sony A57
  • $666
  • 4/3
  • Lens selection
  • Shoot 4K video
  • $800
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M10 IV vs Sony A57

Compared to Sony A37

Pentax K-5 IIs
Sony A37
  • $497
  • APS-C
  • Lens selection
  • Fast startup
  • $600
  • APS-C
  • Less expensive
  • Focus peaking

Compare Pentax K-5 IIs vs Sony A37

Olympus E-M10 IV
Sony A37
  • $666
  • 4/3
  • Lens selection
  • Shoot 4K video
  • $600
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M10 IV vs Sony A37

Compared to Olympus E-M5 III

Pentax K-5 IIs
Olympus E-M5 III
  • $497
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $924
  • 4/3
  • Focus peaking
  • Tilt-swivel screen

Compare Pentax K-5 IIs vs Olympus E-M5 III

Olympus E-M10 IV
Olympus E-M5 III
  • $666
  • 4/3
  • Less expensive
  • Longer video battery life
  • $924
  • 4/3
  • Tilt-swivel screen
  • High resolution composite

Compare Olympus E-M10 IV vs Olympus E-M5 III

Compared to Panasonic G100

Pentax K-5 IIs
Panasonic G100
  • $497
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
  • $599
  • 4/3
  • Tilt-swivel screen
  • Focus peaking

Compare Pentax K-5 IIs vs Panasonic G100

Olympus E-M10 IV
Panasonic G100
  • $666
  • 4/3
  • In-Camera Image Stabilization
  • More telephoto lens reach
  • $599
  • 4/3
  • Less expensive
  • Tilt-swivel screen

Compare Olympus E-M10 IV vs Panasonic G100

Compare Other Cameras?