• 4/3 224.9mm2
  • 12.1 megapixels
  • ISO 160 - 6400
  • APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200

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Differences

Panasonic GF5 advantages over Pentax K-S1

  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Thinner
    36 mm vs 69 mm
    Thinner
  • Lighter weight
    364g vs 765g
    Lighter weight
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots

Pentax K-S1 advantages over Panasonic GF5

  • 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.
  • 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
  • Higher effective ISO
    1,061 vs 618 iso
    Take photos in low light with less noise
  • More dynamic range
    13.0 vs 11.6 evs
    Retain detail in highlight and shadows
  • Longer stills battery life
    More info 480 vs 330 shots
    Capture more photos
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • More pixels
    20.1 vs 12.1 megapixels
    Higher resolution photos
  • Optional anti-aliasing filter
    Optional vs Fixed
    Lets you choose sharper photos or reduced moiré
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Faster JPEG shooting
    5.4 fps vs 4.0 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    20 vs 5 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 12800 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video

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
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • 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

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Your purchases support this site

Buy the Panasonic GF5

Your purchases support this site

Buy the Pentax K-S1

Review Excerpt

  • Small body pairs nicely with compact, retractable Power Zoom lens. Extremely fast autofocus. Worthwhile improvements in image quality. Touchscreen overlays can now be hidden.

  • LCD panel is prone to fingerprint smudges. Weak flash, and no hot shoe. Modest burst performance, and very limited buffer for raw shooting. Noise levels and dynamic range still lag competition.

The Competition

Compared to Olympus E-PL3

Panasonic GF5
Olympus E-PL3
  • $450
  • 4/3
  • Touchscreen
  • Fast startup
  • $700
  • 4/3
  • In-Camera Image Stabilization
  • Tiltable Screen
Pentax K-S1
Olympus E-PL3
  • $502
  • APS-C
  • Focus peaking
  • Larger sensor
  • $700
  • 4/3
  • Tiltable Screen
  • Thinner

Compared to Olympus E-PM1

Panasonic GF5
Olympus E-PM1
  • $450
  • 4/3
  • Touchscreen
  • Higher effective ISO
  • $500
  • 4/3
  • In-Camera Image Stabilization
  • Hot shoe
Pentax K-S1
Olympus E-PM1
  • $502
  • APS-C
  • Focus peaking
  • Larger sensor
  • $500
  • 4/3
  • Less expensive
  • Thinner

Compared to Panasonic GF3X

Panasonic GF5
Panasonic GF3X
  • $450
  • 4/3
  • Higher effective ISO
  • More dynamic range
  • $750
  • 4/3
Pentax K-S1
Panasonic GF3X
  • $502
  • APS-C
  • Focus peaking
  • Larger sensor
  • $750
  • 4/3
  • Touchscreen
  • Thinner

Compared to Sony A58

Panasonic GF5
Sony A58
  • $450
  • 4/3
  • Lens selection
  • Touchscreen
  • $598
  • APS-C
  • Focus peaking
  • Larger sensor
Pentax K-S1
Sony A58
  • $502
  • APS-C
  • Lens selection
  • Higher effective ISO
  • $598
  • APS-C
  • Less expensive
  • In-camera panoramas

Compared to Pentax K-S2

Panasonic GF5
Pentax K-S2
  • $450
  • 4/3
  • Touchscreen
  • Thinner
  • $499
  • APS-C
  • Tilt-swivel screen
  • Focus peaking
Pentax K-S1
Pentax K-S2
  • $502
  • APS-C
  • Higher-res screen
  • $499
  • APS-C
  • Tilt-swivel screen
  • Built-in Wi-Fi
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