• APS-C 357.3mm2
  • 20.1 megapixels
  • ISO 100 - 16,000
  • APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200

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Differences

Sony A3000 advantages over Pentax K-S1

  • Less expensive
    $400 vs $800 (MSRP)
    Save money for lenses or accessories
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo

Pentax K-S1 advantages over Sony A3000

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • Higher-res screen
    307k vs 77k pixels
    More detail on the screen lets you judge focus and composition
  • More viewfinder magnification
    0.63x vs 0.47x
    Get a bigger view of the scene through the eye-level viewfinder
  • 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 JPEG shooting
    5.4 fps vs 3.5 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    20 vs 11 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 16000 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
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • 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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Buy the Sony A3000
Kit with 18-55mm Lens
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Your purchases support this site

Buy the Pentax K-S1
Body Only
  • Body Only
  • Kit with 18-55mm and 50-200mm Lenses
All K-S1 Deals

Review Excerpt

  • Absolutely incredible value; Includes a stabilized kit lens; More versatile than a fixed-lens bridge camera; Comfortable body with good ergonomics; Great image quality; Good autofocus performance; Decent battery life.

  • Feels a bit plasticky; Slow burst shooting with limited buffer; Sluggish to power on or switch modes; Low-res EVF and LCD monitor; Can't review images using EVF; No video output; Weak flash; Battery charges in-camera.

  • Read our Sony A3000 Review

The Competition

Compared to Pentax K-01

Sony A3000
Pentax K-01
  • $500
  • APS-C
  • Less expensive
  • Eye-level viewfinder
  • $359
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization

Compare Sony A3000 vs Pentax K-01

Pentax K-S1
Pentax K-01
  • $502
  • APS-C
  • Eye-level viewfinder
  • More telephoto lens reach
  • $359
  • APS-C
  • External Mic Jack

Compare Pentax K-S1 vs Pentax K-01

Compared to Nikon D5500

Sony A3000
Nikon D5500
  • $500
  • APS-C
  • Focus peaking
  • In-camera panoramas
  • $597
  • APS-C
  • Tilt-swivel screen
  • Lens selection

Compare Sony A3000 vs Nikon D5500

Pentax K-S1
Nikon D5500
  • $502
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $597
  • APS-C
  • Tilt-swivel screen
  • Touchscreen

Compare Pentax K-S1 vs Nikon D5500

Compared to Pentax K-S2

Sony A3000
Pentax K-S2
  • $500
  • APS-C
  • In-camera panoramas
  • Lighter weight
  • $499
  • APS-C
  • Tilt-swivel screen
  • Lens selection

Compare Sony A3000 vs 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

Compare Pentax K-S1 vs Pentax K-S2

Compared to Sigma sd Quattro

Sony A3000
Sigma sd Quattro
  • $500
  • APS-C
  • Lens selection
  • In-camera panoramas
  • $699
  • APS-C
  • On-sensor phase detect
  • HDMI out

Compare Sony A3000 vs Sigma sd Quattro

Pentax K-S1
Sigma sd Quattro
  • $502
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization
  • $699
  • APS-C
  • On-sensor phase detect
  • More dots on screen

Compare Pentax K-S1 vs Sigma sd Quattro

Compared to Canon EOS M5

Sony A3000
Canon EOS M5
  • $500
  • APS-C
  • Lens selection
  • In-camera panoramas
  • $787
  • APS-C
  • Touchscreen
  • Tiltable Screen

Compare Sony A3000 vs Canon EOS M5

Pentax K-S1
Canon EOS M5
  • $502
  • APS-C
  • Lens selection
  • Larger sensor
  • $787
  • APS-C
  • Touchscreen
  • Tiltable Screen

Compare Pentax K-S1 vs Canon EOS M5

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