• APS-C 369.7mm2
  • 14.2 megapixels
  • ISO 100 - 12,800
  • APS-C 369.0mm2
  • 19.6 megapixels
  • 28.00mm (35mm eq.)

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Differences

Sony A33 advantages over Sigma dp1 Quattro

  • Less expensive
    $750 vs $999 (MSRP)
    Save money for lenses or accessories
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 5.16 vs 4.33 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
  • Longer stills battery life
    More info 270 vs 200 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • 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
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Faster shutter
    1/4000 vs 1/2000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    25600 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Sigma dp1 Quattro advantages over Sony A33

  • Higher max flash sync
    1/1250 vs 1/160 sec
    Reduce the effect of ambient light in flash shots
  • Newer
    7 years vs 11 years old
    Newer cameras often support more advanced features
  • More pixels
    19.6 vs 14.2 megapixels
    Higher resolution photos
  • Doesn't require an AA filter
    Yes vs No
    A unique sensor design provides sharp photos without moiré

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities

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
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • 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 D3100

Sony A33
Nikon D3100
  • $540
  • APS-C
  • In-Camera Image Stabilization
  • In-camera panoramas
  • $700
  • APS-C
  • Lens selection
  • Fast startup
Sigma dp1 Quattro
Nikon D3100
  • $899
  • APS-C
  • Higher max flash sync
  • Newer
  • $700
  • APS-C
  • Less expensive
  • Eye-level viewfinder

Compared to Sony A55

Sony A33
Sony A55
  • $540
  • APS-C
  • $734
  • APS-C
  • Higher effective ISO
  • Built-in GPS
Sigma dp1 Quattro
Sony A55
  • $899
  • APS-C
  • Higher max flash sync
  • Newer
  • $734
  • APS-C
  • Less expensive
  • Eye-level viewfinder

Compared to Sony A35

Sony A33
Sony A35
  • $540
  • APS-C
  • Tiltable Screen
  • Faster JPEG shooting
  • $567
  • APS-C
  • Higher effective ISO
  • Longer stills battery life
Sigma dp1 Quattro
Sony A35
  • $899
  • APS-C
  • Higher max flash sync
  • Newer
  • $567
  • APS-C
  • Less expensive
  • Eye-level viewfinder

Compared to Sigma dp2 Quattro

Sony A33
Sigma dp2 Quattro
  • $540
  • APS-C
  • Eye-level viewfinder
  • In-Camera Image Stabilization
  • $1000
  • APS-C
  • Higher max flash sync
  • Newer
Sigma dp1 Quattro
Sigma dp2 Quattro
  • $899
  • APS-C
  • Wider angle lens
  • $1000
  • APS-C
  • More telephoto lens reach

Compared to Sigma dp3 Quattro

Sony A33
Sigma dp3 Quattro
  • $540
  • APS-C
  • Less expensive
  • Eye-level viewfinder
  • $999
  • APS-C
  • Higher max flash sync
  • Newer
Sigma dp1 Quattro
Sigma dp3 Quattro
  • $899
  • APS-C
  • Wider angle lens
  • $999
  • APS-C
  • More telephoto lens reach
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