• APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200
  • 1/2.3 inch 28.1mm2
  • 12.1 megapixels
  • 24.00mm - 720.00mm (35mm eq.)

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Differences

Pentax K-S1 advantages over Panasonic ZS50

  • Larger sensor
    APS-C vs 1/2.3 inch
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.29 vs 1.54 microns
    Better low-light and dynamic range (all else equal)
  • Better color depth
    23.5 vs 20.0 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    1,061 vs 138 iso
    Take photos in low light with less noise
  • More dynamic range
    13.0 vs 11.2 evs
    Retain detail in highlight and shadows
  • Longer stills battery life
    More info 480 vs 300 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 viewfinder magnification
    0.63x vs 0.46x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    20.1 vs 12.1 megapixels
    Higher resolution photos
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Bigger JPEG buffer
    20 vs 6 shots
    Take more JPEG shots before waiting (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

Panasonic ZS50 advantages over Pentax K-S1

  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Thinner
    34 mm vs 69 mm
    Thinner
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    10.0 fps vs 5.4 fps
    Faster JPEG shooting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • 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
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • 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
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • 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
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter
  • 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

User reviews

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Review Excerpt

The Competition

Compared to Sony A58

Pentax K-S1
Sony A58
  • $502
  • APS-C
  • Lens selection
  • Higher effective ISO
  • $598
  • APS-C
  • Less expensive
  • In-camera panoramas
Panasonic ZS50
Sony A58
  • $299
  • 1/2.3 inch
  • Built-in Wi-Fi
  • NFC
  • $598
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Panasonic ZS40

Pentax K-S1
Panasonic ZS40
  • $502
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $380
  • 1/2.3 inch
  • Less expensive
  • In-camera panoramas
Panasonic ZS50
Panasonic ZS40
  • $299
  • 1/2.3 inch
  • Bigger pixels
  • Higher effective ISO
  • $380
  • 1/2.3 inch
  • Built-in GPS
  • More pixels

Compared to Canon SX700 HS

Pentax K-S1
Canon SX700 HS
  • $502
  • APS-C
  • Focus peaking
  • Larger sensor
  • $329
  • 1/2.3 inch
  • Less expensive
  • Built-in Wi-Fi
Panasonic ZS50
Canon SX700 HS
  • $299
  • 1/2.3 inch
  • Focus peaking
  • Eye-level viewfinder
  • $329
  • 1/2.3 inch
  • More pixels
  • Faster shutter

Compared to Nikon D5500

Pentax K-S1
Nikon D5500
  • $502
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $697
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
Panasonic ZS50
Nikon D5500
  • $299
  • 1/2.3 inch
  • Focus peaking
  • Less expensive
  • $697
  • APS-C
  • Tilt-swivel screen
  • Larger sensor

Compared to Pentax K-S2

Pentax K-S1
Pentax K-S2
  • $502
  • APS-C
  • Higher-res screen
  • $499
  • APS-C
  • Tilt-swivel screen
  • Built-in Wi-Fi
Panasonic ZS50
Pentax K-S2
  • $299
  • 1/2.3 inch
  • In-camera panoramas
  • Thinner
  • $499
  • APS-C
  • Larger sensor
  • Tilt-swivel screen
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