• 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 12,800
  • APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200

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Differences

Panasonic GH3 advantages over Pentax K-S2

  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Longer stills battery life
    More info 540 vs 410 shots
    Capture more photos
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    6.1 fps vs 5.2 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    Unlimited vs 28 shots
    Take more JPEG shots before waiting (burst mode)
  • Bigger RAW buffer
    24 vs 9 shots
    Larger buffer for RAW shots (burst mode)

Pentax K-S2 advantages over Panasonic GH3

  • Less expensive
    $800 vs $1300 (MSRP)
    Save money for lenses or accessories
  • 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.
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Less shutter lag
    0.12 vs 0.21 sec
    Focus and take a photo quickly (wide angle)
  • 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
  • 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

  • Tilt-swivel screen
    Both provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • 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
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Buy the Panasonic GH3

Your purchases support this site

Buy the Pentax K-S2

Review Excerpt

  • Professional quality video in a compact body; Still image quality ranks with the best mirrorless models and even some prosumer DSLRs; Fast autofocus; Rugged, weatherized camera build; Reasonably priced for its advanced feature set; Large selection of high quality lenses.

  • Not as compact as most mirrorless cameras; Live View not available during high speed bursts; High ISO image quality and dynamic range not quite as good as top APS-C cameras.

  • 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

The Competition

Compared to Panasonic G5

Panasonic GH3
Panasonic G5
  • $798
  • 4/3
  • Tilt-swivel screen
  • Fast startup
  • $500
  • 4/3
  • Higher-res screen
Pentax K-S2
Panasonic G5
  • $499
  • APS-C
  • Focus peaking
  • Larger sensor
  • $500
  • 4/3
  • Touchscreen
  • Lighter weight

Compared to Pentax K-500

Panasonic GH3
Pentax K-500
  • $798
  • 4/3
  • Tilt-swivel screen
  • Touchscreen
  • $597
  • APS-C
  • Less expensive
  • Focus peaking
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

Compared to Olympus E-M1

Panasonic GH3
Olympus E-M1
  • $798
  • 4/3
  • Tilt-swivel screen
  • Longer stills battery life
  • $1099
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
Pentax K-S2
Olympus E-M1
  • $499
  • APS-C
  • Tilt-swivel screen
  • Larger sensor
  • $1099
  • 4/3
  • Touchscreen
  • On-sensor phase detect

Compared to Panasonic GH4

Panasonic GH3
Panasonic GH4
  • $798
  • 4/3
  • $899
  • 4/3
  • Focus peaking
  • Shoot 4K video
Pentax K-S2
Panasonic GH4
  • $499
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
  • $899
  • 4/3
  • Shoot 4K video
  • Touchscreen

Compared to Pentax K-S1

Panasonic GH3
Pentax K-S1
  • $798
  • 4/3
  • Tilt-swivel screen
  • Touchscreen
  • $502
  • APS-C
  • Focus peaking
  • Larger sensor
Pentax K-S2
Pentax K-S1
  • $499
  • APS-C
  • Tilt-swivel screen
  • Built-in Wi-Fi
  • $502
  • APS-C
  • Higher-res screen
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