• 1/1.7 inch 43.3mm2
  • 12.0 megapixels
  • 37.00mm - 111.00mm (35mm eq.)
  • APS-C 369.0mm2
  • 19.6 megapixels
  • 28.00mm (35mm eq.)

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Differences

Pentax A40 advantages over Sigma dp1 Quattro

  • Less expensive
    $300 vs $999 (MSRP)
    Save money for lenses or accessories
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • More telephoto lens reach
    111 mm vs 28 mm
    Capture objects farther away
  • Longer stills battery life
    More info 240 vs 200 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    22 mm vs 87 mm
    Thinner
  • Lighter weight
    150g vs 425g
    Lighter weight

Sigma dp1 Quattro advantages over Pentax A40

  • Larger sensor
    APS-C vs 1/1.7 inch
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.33 vs 1.90 microns
    Better low-light and dynamic range (all else equal)
  • RAW file ability
    Yes vs No
    Gives you more flexibility to develop your photos later
  • Newer
    10 years vs 16 years old
    Newer cameras often support more advanced features
  • More dots on screen
    922k vs 232k dots
    Can mean greater resolution or a brighter screen
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • More pixels
    19.6 vs 12.0 megapixels
    Higher resolution photos
  • Wider angle lens
    28 mm vs 37 mm
    Capture more of the scene
  • Longer exposure
    30 vs 4 sec
    Long exposures for night shots
  • Higher extended ISO
    6400 vs 3200 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.

Common Weaknesses

  • Focus peaking
    Neither provide
    Your camera will highlight what's in focus
  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Eye-level viewfinder
    Neither provide
    You'll be able to frame photos even when the sun is out
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • 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
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • HDMI out
    Neither provide
    Use HDMI output to monitor or review video
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Bulb shutter
    Neither provide
    Hold the shutter open manually for long exposures
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

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Sigma dp1 Quattro

Review Excerpt

The Competition

Compared to Pentax S12

Pentax A40
Pentax S12
  • $300
  • 1/1.7 inch
  • In-Camera Image Stabilization
  • $280
  • 1/1.7 inch

Compare Pentax A40 vs Pentax S12

Sigma dp1 Quattro
Pentax S12
  • $1103
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $280
  • 1/1.7 inch
  • Less expensive
  • More telephoto lens reach

Compare Sigma dp1 Quattro vs Pentax S12

Compared to Samsung SL310

Pentax A40
Samsung SL310
  • $300
  • 1/1.7 inch
  • Manual focus
  • $230
  • 1/1.72 inch
  • Less expensive
  • Wider angle lens

Compare Pentax A40 vs Samsung SL310

Sigma dp1 Quattro
Samsung SL310
  • $1103
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $230
  • 1/1.72 inch
  • Less expensive
  • In-Camera Image Stabilization

Compare Sigma dp1 Quattro vs Samsung SL310

Compared to Samsung TL34HD

Pentax A40
Samsung TL34HD
  • $300
  • 1/1.7 inch
  • Manual focus
  • $330
  • 1/1.72 inch
  • HDMI out
  • More dots on screen

Compare Pentax A40 vs Samsung TL34HD

Sigma dp1 Quattro
Samsung TL34HD
  • $1103
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $330
  • 1/1.72 inch
  • Less expensive
  • In-Camera Image Stabilization

Compare Sigma dp1 Quattro vs Samsung TL34HD

Compared to Sigma dp2 Quattro

Pentax A40
Sigma dp2 Quattro
  • $300
  • 1/1.7 inch
  • In-Camera Image Stabilization
  • More telephoto lens reach
  • $899
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Pentax A40 vs Sigma dp2 Quattro

Sigma dp1 Quattro
Sigma dp2 Quattro
  • $1103
  • APS-C
  • Wider angle lens
  • $899
  • APS-C
  • More telephoto lens reach

Compare Sigma dp1 Quattro vs Sigma dp2 Quattro

Compared to Sigma dp3 Quattro

Pentax A40
Sigma dp3 Quattro
  • $300
  • 1/1.7 inch
  • Less expensive
  • In-Camera Image Stabilization
  • $999
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Pentax A40 vs Sigma dp3 Quattro

Sigma dp1 Quattro
Sigma dp3 Quattro
  • $1103
  • APS-C
  • Wider angle lens
  • $999
  • APS-C
  • More telephoto lens reach

Compare Sigma dp1 Quattro vs Sigma dp3 Quattro

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