• APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200
  • APS-H 476.1mm2
  • 25.6 megapixels
  • ISO 100 - 6400

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Differences

Pentax K-S2 advantages over Sigma sd Quattro H

  • Lens selection
    Excellent vs Limited
    Better lens selection gives you more options
  • Less expensive
    $800 vs $1200 (MSRP)
    Save money for lenses or accessories
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • 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
  • Thinner
    64 mm vs 90 mm
    Thinner
  • 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
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Faster RAW shooting
    5.2 fps vs 4.4 fps
    Faster RAW shooting in burst mode
  • Faster shutter
    1/6000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Sigma sd Quattro H advantages over Pentax K-S2

  • Larger sensor
    APS-H vs APS-C
    More sensor area. Bigger is (generally) better.
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • More dots on screen
    1620k vs 922k dots
    Can mean greater resolution or a brighter screen
  • More viewfinder magnification
    0.74x vs 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    25.6 vs 20.1 megapixels
    Higher resolution photos

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • 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

  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • 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
  • 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 Pentax K-S2
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  • Body Only (White)
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  • Kit with 18-50mm WR Lens (White)
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Your purchases support this site

Buy the Sigma sd Quattro H
Body Only

Review Excerpt

  • 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 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

Sigma sd Quattro H
Pentax K-500
  • $1199
  • APS-H
  • Larger sensor
  • On-sensor phase detect
  • $597
  • APS-C
  • Lens selection
  • Less expensive

Compare Sigma sd Quattro H vs Pentax K-500

Compared to Pentax K-S1

Pentax K-S2
Pentax K-S1
  • $499
  • APS-C
  • Tilt-swivel screen
  • Built-in Wi-Fi
  • $502
  • APS-C
  • Higher-res screen

Compare Pentax K-S2 vs Pentax K-S1

Sigma sd Quattro H
Pentax K-S1
  • $1199
  • APS-H
  • Larger sensor
  • On-sensor phase detect
  • $502
  • APS-C
  • Lens selection
  • Less expensive

Compare Sigma sd Quattro H vs Pentax K-S1

Compared to Nikon D5500

Pentax K-S2
Nikon D5500
  • $499
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $697
  • APS-C
  • Touchscreen
  • Fast startup

Compare Pentax K-S2 vs Nikon D5500

Sigma sd Quattro H
Nikon D5500
  • $1199
  • APS-H
  • Focus peaking
  • Larger sensor
  • $697
  • APS-C
  • Lens selection
  • Tilt-swivel screen

Compare Sigma sd Quattro H vs Nikon D5500

Compared to Sigma sd Quattro

Pentax K-S2
Sigma sd Quattro
  • $499
  • APS-C
  • Tilt-swivel screen
  • Lens selection
  • $699
  • APS-C
  • On-sensor phase detect
  • More dots on screen

Compare Pentax K-S2 vs Sigma sd Quattro

Sigma sd Quattro H
Sigma sd Quattro
  • $1199
  • APS-H
  • Larger sensor
  • More pixels
  • $699
  • APS-C
  • Bigger RAW buffer

Compare Sigma sd Quattro H vs Sigma sd Quattro

Compared to Fujifilm X-H1

Pentax K-S2
Fujifilm X-H1
  • $499
  • APS-C
  • Tilt-swivel screen
  • Lens selection
  • $1199
  • APS-C
  • Shoot 4K video
  • Touchscreen

Compare Pentax K-S2 vs Fujifilm X-H1

Sigma sd Quattro H
Fujifilm X-H1
  • $1199
  • APS-H
  • Larger sensor
  • More dots on screen
  • $1199
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization

Compare Sigma sd Quattro H vs Fujifilm X-H1

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