• APS-C 369.7mm2
  • 16.3 megapixels
  • ISO 100 - 12,800
  • 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600

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Differences

Pentax K-5 IIs advantages over Olympus E-M10

  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.81 vs 3.75 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.60 vs 1.3 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    1,208 vs 884 iso
    Take photos in low light with less noise
  • More dynamic range
    14.1 vs 12.3 evs
    Retain detail in highlight and shadows
  • Longer stills battery life
    More info 740 vs 320 shots
    Capture more photos
  • 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
  • Bigger RAW buffer
    22 vs 15 shots
    Larger buffer for RAW shots (burst mode)
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Olympus E-M10 advantages over Pentax K-5 IIs

  • Less expensive
    $800 vs $1200 (MSRP)
    Save money for lenses or accessories
  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • 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
  • Thinner
    45 mm vs 73 mm
    Thinner
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    8.1 fps vs 6.7 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    8.1 fps vs 6.7 fps
    Faster RAW shooting in burst mode

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 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
  • 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

Buy From

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.

  • 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 Sony A35

Pentax K-5 IIs
Sony A35
  • $497
  • APS-C
  • Lens selection
  • Fast startup
  • $567
  • APS-C
  • Less expensive
  • In-camera panoramas
Olympus E-M10
Sony A35
  • $399
  • 4/3
  • Lens selection
  • Focus peaking
  • $567
  • APS-C
  • Larger sensor
  • Bigger pixels

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
Olympus E-M10
Sony A57
  • $399
  • 4/3
  • Lens selection
  • Touchscreen
  • $800
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Sony A37

Pentax K-5 IIs
Sony A37
  • $497
  • APS-C
  • Lens selection
  • Fast startup
  • $600
  • APS-C
  • Less expensive
  • Focus peaking
Olympus E-M10
Sony A37
  • $399
  • 4/3
  • Lens selection
  • Touchscreen
  • $600
  • APS-C
  • Less expensive
  • Larger sensor

Compared to Panasonic GX7

Pentax K-5 IIs
Panasonic GX7
  • $497
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $648
  • 4/3
  • Focus peaking
  • Touchscreen
Olympus E-M10
Panasonic GX7
  • $399
  • 4/3
  • Less expensive
  • Higher effective ISO
  • $648
  • 4/3
  • In-camera panoramas
  • Fast startup

Compared to Olympus E-M10 II

Pentax K-5 IIs
Olympus E-M10 II
  • $497
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $349
  • 4/3
  • Focus peaking
  • Touchscreen
Olympus E-M10
Olympus E-M10 II
  • $399
  • 4/3
  • $349
  • 4/3
  • Fast startup
  • Shoots 24p video
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