• APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 6400
  • APS-C 369.7mm2
  • 16.1 megapixels
  • ISO 100 - 16,000

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Differences

Pentax K-x advantages over Sony A37

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Fast startup
    ~0.60 vs 0.9 sec
    Faster startup lets you catch the moment
  • More cross-type AF points
    9 vs 3
    Cross-type AF points improve autofocus performance
  • Bigger JPEG buffer
    25 vs 10 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/6000 vs 1/4000 sec
    Shoot wide open in bright light

Sony A37 advantages over Pentax K-x

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More viewfinder magnification
    0.73x vs 0.57x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    16.1 vs 12.4 megapixels
    Higher resolution photos
  • More AF points
    15 vs 11
    More AF points improve autofocus
  • Faster JPEG shooting
    5.5 fps vs 4.3 fps
    Faster JPEG shooting (burst mode)
  • Higher extended ISO
    25600 vs 12800 ISO
    Higher extended ISO can give more low-light flexibility

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

  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • 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
  • 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 Sony DSLR-A380

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

Compare Pentax K-x vs Sony DSLR-A380

Sony A37
Sony DSLR-A380
  • $600
  • APS-C
  • Less expensive
  • Focus peaking
  • $849
  • APS-C
  • Fast startup
  • Bigger JPEG buffer

Compare Sony A37 vs Sony DSLR-A380

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

Compare Pentax K-x vs Pentax K-7

Sony A37
Pentax K-7
  • $600
  • APS-C
  • Less expensive
  • Focus peaking
  • $1300
  • APS-C
  • Lens selection
  • Fast startup

Compare Sony A37 vs Pentax K-7

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

Compare Pentax K-x vs Pentax K-r

Sony A37
Pentax K-r
  • $600
  • APS-C
  • Less expensive
  • Focus peaking
  • $850
  • APS-C
  • Lens selection
  • Fast startup

Compare Sony A37 vs Pentax K-r

Compared to Sony A57

Pentax K-x
Sony A57
  • $702
  • APS-C
  • Lens selection
  • Less expensive
  • $800
  • APS-C
  • Focus peaking
  • In-camera panoramas

Compare Pentax K-x vs Sony A57

Sony A37
Sony A57
  • $600
  • APS-C
  • Less expensive
  • External Mic Jack
  • $800
  • APS-C
  • Longer stills battery life
  • Higher-res screen

Compare Sony A37 vs Sony A57

Compared to Pentax K-5 IIs

Pentax K-x
Pentax K-5 IIs
  • $702
  • APS-C
  • Less expensive
  • Shoots 24p video
  • $497
  • APS-C
  • Higher effective ISO
  • More dynamic range

Compare Pentax K-x vs Pentax K-5 IIs

Sony A37
Pentax K-5 IIs
  • $600
  • APS-C
  • Less expensive
  • Focus peaking
  • $497
  • APS-C
  • Lens selection
  • Fast startup

Compare Sony A37 vs Pentax K-5 IIs

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