• APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 6400
  • APS-C 357.3mm2
  • 20.1 megapixels
  • ISO 100 - 16,000

Buy From

Differences

Pentax K-x 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
  • Bigger pixels
    ~ 5.53 vs 4.25 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.60 vs 2.2 sec
    Faster startup lets you catch the moment
  • Less shutter lag
    0.10 vs 0.28 sec
    Focus and take a photo quickly (wide angle)
  • More viewfinder magnification
    0.57x vs 0.47x
    Get a bigger view of the scene through the eye-level viewfinder
  • Faster JPEG shooting
    4.3 fps vs 3.5 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    25 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

Sony A3000 advantages over Pentax K-x

  • Less expensive
    $400 vs $650 (MSRP)
    Save money for lenses or accessories
  • 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
  • Higher effective ISO
    1,068 vs 811 iso
    Take photos in low light with less noise
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    20.1 vs 12.4 megapixels
    Higher resolution photos

Similarities

Common Strengths

  • 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
  • HDMI out
    Neither provide
    Use HDMI output to monitor or review 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

Buy From

Your purchases support this site

Buy the Pentax K-x

Your purchases support this site

Buy the Sony A3000
Kit with 18-55mm Lens
All A3000 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 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 A3000
Sony DSLR-A380
  • $500
  • APS-C
  • Less expensive
  • Focus peaking
  • $849
  • APS-C
  • In-Camera Image Stabilization
  • Bigger pixels

Compare Sony A3000 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 A3000
Pentax K-7
  • $500
  • APS-C
  • Less expensive
  • Focus peaking
  • $1300
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization

Compare Sony A3000 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 A3000
Pentax K-r
  • $500
  • APS-C
  • Less expensive
  • Focus peaking
  • $850
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization

Compare Sony A3000 vs Pentax K-r

Compared to Pentax K-01

Pentax K-x
Pentax K-01
  • $702
  • APS-C
  • Less expensive
  • Eye-level viewfinder
  • $359
  • APS-C
  • Focus peaking
  • Higher effective ISO

Compare Pentax K-x vs 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

Compared to Sigma sd Quattro

Pentax K-x
Sigma sd Quattro
  • $702
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization
  • $699
  • APS-C
  • Focus peaking
  • On-sensor phase detect

Compare Pentax K-x vs 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

Compare Other Cameras?