• APS-C 369.0mm2
  • 14.8 megapixels
  • 75.00mm (35mm eq.)
  • APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200

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Differences

Sigma DP3 Merrill advantages over Pentax K-S2

  • Bigger pixels
    ~ 5.00 vs 4.29 microns
    Better low-light and dynamic range (all else equal)
  • Higher-res screen
    307k vs 230k pixels
    More detail on the screen lets you judge focus and composition

Pentax K-S2 advantages over Sigma DP3 Merrill

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Less expensive
    $499 vs $899*
    Save money for lenses or accessories
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • 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
  • Longer stills battery life
    More info 410 vs 97 shots
    Capture more photos
  • 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
  • Newer
    4 years vs 6 years old
    Newer cameras often support more advanced features
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review 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
  • More pixels
    20.1 vs 14.8 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Faster JPEG shooting
    5.2 fps vs 4.0 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    28 vs 7 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    5.2 fps vs 4.0 fps
    Faster RAW shooting in burst mode
  • Faster shutter
    1/6000 vs 1/2000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities

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
  • 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
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter
  • 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

Your purchases support this site

Buy the Pentax K-S2

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

The Competition

Compared to Pentax K-500

Sigma DP3 Merrill
Pentax K-500
  • $899
  • APS-C
  • Doesn't require an AA filter
  • $597
  • APS-C
  • Focus peaking
  • Less expensive
Pentax K-S2
Pentax K-500
  • $522
  • APS-C
  • Less expensive
  • Tilt-swivel screen
  • $597
  • APS-C
  • Longer stills battery life
  • Higher-res screen

Compared to Nikon D5300

Sigma DP3 Merrill
Nikon D5300
  • $899
  • APS-C
  • Bigger pixels
  • Doesn't require an AA filter
  • $574
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Pentax K-S2
Nikon D5300
  • $522
  • APS-C
  • Focus peaking
  • Less expensive
  • $574
  • APS-C
  • Fast startup
  • Built-in GPS

Compared to Pentax K-S1

Sigma DP3 Merrill
Pentax K-S1
  • $899
  • APS-C
  • Bigger pixels
  • $399
  • APS-C
  • Focus peaking
  • Eye-level viewfinder
Pentax K-S2
Pentax K-S1
  • $522
  • APS-C
  • Tilt-swivel screen
  • Built-in Wi-Fi
  • $399
  • APS-C
  • Higher-res screen

Compared to Nikon D5500

Sigma DP3 Merrill
Nikon D5500
  • $899
  • APS-C
  • Bigger pixels
  • Doesn't require an AA filter
  • $597
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Pentax K-S2
Nikon D5500
  • $522
  • APS-C
  • Focus peaking
  • Less expensive
  • $597
  • APS-C
  • Touchscreen
  • Fast startup

Compared to Canon T6i

Sigma DP3 Merrill
Canon T6i
  • $899
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $549
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Pentax K-S2
Canon T6i
  • $522
  • APS-C
  • Less expensive
  • Focus peaking
  • $549
  • APS-C
  • Touchscreen
  • On-sensor phase detect
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