• 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600
  • APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200

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Differences

Olympus E-M5 advantages over Pentax K-S2

  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • More telephoto lens reach
    100 mm vs 75 mm
    Capture objects farther away with the kit lens
  • Thinner
    43 mm vs 64 mm
    Thinner
  • Lighter weight
    652g vs 859g
    Lighter weight
  • 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 5.2 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    9.0 fps vs 5.2 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    16 vs 9 shots
    Larger buffer for RAW shots (burst mode)

Pentax K-S2 advantages over Olympus E-M5

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Less expensive
    $800 vs $1300 (MSRP)
    Save money for lenses or accessories
  • Tilt-swivel screen
    Tilt-swivel vs tilt-only
    Tilt and swivel the screen for maximum shooting flexibility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • 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
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • Less shutter lag
    0.12 vs 0.28 sec
    Focus and take a photo quickly (wide angle)
  • More viewfinder magnification
    0.63x vs 0.58x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    20.1 vs 16.1 megapixels
    Higher resolution photos
  • Optional anti-aliasing filter
    Optional vs Fixed
    Lets you choose sharper photos or reduced moiré
  • Bigger JPEG buffer
    28 vs 17 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/6000 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

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
  • 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

  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • 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
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • 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

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Buy the Olympus E-M5
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  • Body Only
  • Kit with 14-42mm Lens

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Buy the Pentax K-S2
Body Only (White)
  • Body Only (White)
  • Body Only (Black)
  • Body Only (Black/Orange)
  • Kit with 18-50mm WR Lens (Black)
  • Kit with 18-50mm WR Lens (Black/Orange)
  • Kit with 18-50mm WR Lens (White)
All K-S2 Deals

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.

  • Read our Olympus E-M5 Review

  • Very compact for a weather-sealed DSLR; Good ergonomics and great viewfinder; Excellent image quality; Decent performance for its class; Articulated screen is great for difficult compositions; Offers features not found in other Pentax DSLRs

  • 18-50mm kit lens is fiddly and prone to jamming when retracted; Wi-Fi is slow and unintuitive; Slow startup; Limited movie mode; Poor battery life for a DSLR; Priced too close to its enthusiast-grade sibling

  • Read our Pentax K-S2 Review

The Competition

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

Compare Olympus E-M5 vs Olympus E-M1

Pentax K-S2
Olympus E-M1
  • $499
  • APS-C
  • Tilt-swivel screen
  • Larger sensor
  • $1099
  • 4/3
  • Touchscreen
  • On-sensor phase detect

Compare Pentax K-S2 vs Olympus E-M1

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

Compare Olympus E-M5 vs Panasonic G3

Pentax K-S2
Panasonic G3
  • $499
  • APS-C
  • Tilt-swivel screen
  • Focus peaking
  • $700
  • 4/3
  • Touchscreen
  • Thinner

Compare Pentax K-S2 vs Panasonic G3

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

Compare Olympus E-M5 vs Olympus E-P5

Pentax K-S2
Olympus E-P5
  • $499
  • APS-C
  • Larger sensor
  • Less expensive
  • $1249
  • 4/3
  • Touchscreen
  • Thinner

Compare Pentax K-S2 vs Olympus E-P5

Compared to Pentax K-500

Olympus E-M5
Pentax K-500
  • $900
  • 4/3
  • Touchscreen
  • Tiltable Screen
  • $597
  • APS-C
  • Focus peaking
  • Larger sensor

Compare Olympus E-M5 vs Pentax K-500

Pentax K-S2
Pentax K-500
  • $499
  • APS-C
  • Tilt-swivel screen
  • Built-in Wi-Fi
  • $597
  • APS-C
  • Less expensive
  • Longer stills battery life

Compare Pentax K-S2 vs Pentax K-500

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

Compare Olympus E-M5 vs Panasonic GX7

Pentax K-S2
Panasonic GX7
  • $499
  • APS-C
  • Less expensive
  • Tilt-swivel screen
  • $648
  • 4/3
  • Touchscreen
  • In-camera panoramas

Compare Pentax K-S2 vs Panasonic GX7

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