• APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 6400
  • APS-C 369.7mm2
  • 14.2 megapixels
  • ISO 100 - 3200

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Differences

Pentax K-x advantages over Sony DSLR-A390

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Higher effective ISO
    811 vs 607 iso
    Take photos in low light with less noise
  • More cross-type AF points
    9 vs 1
    Cross-type AF points improve autofocus performance
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • More viewfinder magnification
    0.57x vs 0.49x
    Get a bigger view of the scene through the eye-level viewfinder
  • Faster shutter
    1/6000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    12800 vs 3200 ISO
    Higher extended ISO can give more low-light flexibility

Sony DSLR-A390 advantages over Pentax K-x

  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video

Similarities

Common Strengths

  • 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
  • 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

  • Focus peaking
    Neither provide
    Your camera will highlight what's in focus
  • 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 Wi-Fi
    Neither provide
    Share your photos wirelessly
  • 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
  • Pentaprism viewfinder
    Neither provide
    Much better viewfinder picture fidelity
  • 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

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Review Excerpt

The Competition

Compared to Nikon D5000

Pentax K-x
Nikon D5000
  • $702
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization
  • $850
  • APS-C
  • Tiltable Screen
  • Fast startup
Sony DSLR-A390
Nikon D5000
  • $507
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization
  • $850
  • APS-C
  • Lens selection
  • Higher effective ISO

Compared to Sony DSLR-A380

Pentax K-x
Sony DSLR-A380
  • $702
  • APS-C
  • Lens selection
  • Less expensive
  • $849
  • APS-C
  • Tiltable Screen
  • HDMI out
Sony DSLR-A390
Sony DSLR-A380
  • $507
  • APS-C
  • Less expensive
  • Lighter weight
  • $849
  • APS-C

Compared to Pentax K-7

Pentax K-x
Pentax K-7
  • $702
  • APS-C
  • Less expensive
  • Higher effective ISO
  • $1300
  • APS-C
  • Longer stills battery life
  • Top deck display
Sony DSLR-A390
Pentax K-7
  • $507
  • APS-C
  • Less expensive
  • Tiltable Screen
  • $1300
  • APS-C
  • Lens selection
  • Longer stills battery life

Compared to Sony DSLR-A290

Pentax K-x
Sony DSLR-A290
  • $702
  • APS-C
  • Lens selection
  • Higher effective ISO
  • $500
  • APS-C
  • Less expensive
  • HDMI out
Sony DSLR-A390
Sony DSLR-A290
  • $507
  • APS-C
  • Tiltable Screen
  • $500
  • APS-C
  • Less expensive
  • More viewfinder magnification

Compared to Pentax K-r

Pentax K-x
Pentax K-r
  • $702
  • APS-C
  • Less expensive
  • Shoots 24p video
  • $850
  • APS-C
  • Fast startup
  • External Mic Jack
Sony DSLR-A390
Pentax K-r
  • $507
  • APS-C
  • Less expensive
  • Tiltable Screen
  • $850
  • APS-C
  • Lens selection
  • Higher effective ISO
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