• 1/2.33 inch 28.2mm2
  • 12.1 megapixels
  • 26.00mm - 676.00mm (35mm eq.)
  • APS-C 369.7mm2
  • 14.2 megapixels
  • ISO 100 - 12,800

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Differences

Pentax X90 advantages over Sony A33

  • Less expensive
    $400 vs $750 (MSRP)
    Save money for lenses or accessories

Sony A33 advantages over Pentax X90

  • Larger sensor
    APS-C vs 1/2.33 inch
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 5.16 vs 1.53 microns
    Better low-light and dynamic range (all else equal)
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • RAW file ability
    Yes vs No
    Gives you more flexibility to develop your photos later
  • Fast startup
    ~0.80 vs 2.9 sec
    Faster startup lets you catch the moment
  • Manual focus
    Yes vs No
    AF is for the weak. Real photographers focus manually.
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More dots on screen
    922k vs 230k dots
    Can mean greater resolution or a brighter screen
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Less shutter lag
    0.21 vs 0.65 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    14.2 vs 12.1 megapixels
    Higher resolution photos
  • Longer exposure
    30 vs 4 sec
    Long exposures for night shots
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Faster JPEG shooting
    7.1 fps vs 1.1 fps
    Faster JPEG shooting (burst mode)
  • Higher extended ISO
    25600 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • 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
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video

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
  • 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
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter
  • 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 P90

Pentax X90
Nikon P90
  • $400
  • 1/2.33 inch
  • Longer stills battery life
  • HDMI out
  • $400
  • 1/2.33 inch
  • Tiltable Screen
  • Longer exposure
Sony A33
Nikon P90
  • $540
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $400
  • 1/2.33 inch
  • Less expensive

Compared to Pentax X70

Pentax X90
Pentax X70
  • $400
  • 1/2.33 inch
  • Longer stills battery life
  • HDMI out
  • $400
  • 1/2.33 inch
  • Tiltable Screen
  • Faster JPEG shooting
Sony A33
Pentax X70
  • $540
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $400
  • 1/2.33 inch
  • Less expensive
  • Faster JPEG shooting

Compared to Nikon P100

Pentax X90
Nikon P100
  • $400
  • 1/2.33 inch
  • More pixels
  • Bigger JPEG buffer
  • $400
  • 1/2.3 inch
  • Tiltable Screen
  • Manual focus
Sony A33
Nikon P100
  • $540
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $400
  • 1/2.3 inch
  • Less expensive
  • Shoots 1080p video

Compared to Nikon D3100

Pentax X90
Nikon D3100
  • $400
  • 1/2.33 inch
  • Less expensive
  • In-Camera Image Stabilization
  • $700
  • APS-C
  • Larger sensor
  • Bigger pixels
Sony A33
Nikon D3100
  • $540
  • APS-C
  • In-Camera Image Stabilization
  • In-camera panoramas
  • $700
  • APS-C
  • Lens selection
  • Fast startup

Compared to Sony A55

Pentax X90
Sony A55
  • $400
  • 1/2.33 inch
  • Less expensive
  • $734
  • APS-C
  • Larger sensor
  • Bigger pixels
Sony A33
Sony A55
  • $540
  • APS-C
  • $734
  • APS-C
  • Higher effective ISO
  • Built-in GPS
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