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

Buy From

Differences

Olympus E-PL7 advantages over Pentax K-S1

  • 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
    38 mm vs 69 mm
    Thinner
  • Lighter weight
    469g vs 765g
    Lighter weight
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    8.7 fps vs 5.4 fps
    Faster JPEG shooting (burst mode)

Pentax K-S1 advantages over Olympus E-PL7

  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • Higher effective ISO
    1,061 vs 873 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 480 vs 350 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • More pixels
    20.1 vs 16.1 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • 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

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • 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

  • 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
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • 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-S1

Review Excerpt

  • Excellent image quality for its class including very good ISO performance; Improved performance and ergonomics over the E-PL5; LCD tilts 180 degree downward for easier selfies; Upgraded 3-axis IS system.

  • No built-in flash (but a small add-on flash is included); No built-in EVF; Default colors somewhat muted; Somewhat quirky menu system.

The Competition

Compared to Olympus E-PL5

Olympus E-PL7
Olympus E-PL5
  • $399
  • 4/3
  • Focus peaking
  • Fast startup
  • $329
  • 4/3
  • Less expensive
Pentax K-S1
Olympus E-PL5
  • $500
  • APS-C
  • Focus peaking
  • Larger sensor
  • $329
  • 4/3
  • Touchscreen
  • Tiltable Screen

Compared to Panasonic GF6

Olympus E-PL7
Panasonic GF6
  • $399
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $400
  • 4/3
  • Less expensive
  • In-camera panoramas
Pentax K-S1
Panasonic GF6
  • $500
  • APS-C
  • Focus peaking
  • Larger sensor
  • $400
  • 4/3
  • Touchscreen
  • In-camera panoramas

Compared to Olympus E-P5

Olympus E-PL7
Olympus E-P5
  • $399
  • 4/3
  • Less expensive
  • Fast startup
  • $399
  • 4/3
  • Internal flash
  • Faster JPEG shooting
Pentax K-S1
Olympus E-P5
  • $500
  • APS-C
  • Larger sensor
  • Eye-level viewfinder
  • $399
  • 4/3
  • Touchscreen
  • Tiltable Screen

Compared to Nikon D5500

Olympus E-PL7
Nikon D5500
  • $399
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $461
  • APS-C
  • Larger sensor
  • Less expensive
Pentax K-S1
Nikon D5500
  • $500
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $461
  • APS-C
  • Tilt-swivel screen
  • Touchscreen

Compared to Pentax K-S2

Olympus E-PL7
Pentax K-S2
  • $399
  • 4/3
  • Touchscreen
  • Fast startup
  • $499
  • APS-C
  • Tilt-swivel screen
  • Larger sensor
Pentax K-S1
Pentax K-S2
  • $500
  • APS-C
  • Higher-res screen
  • $499
  • APS-C
  • Tilt-swivel screen
  • Built-in Wi-Fi
Compare Other Cameras?