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Sigma DP2s review

Our Rating :
Price when reviewed : £540
inc VAT

The Sigma DP2s produces stunning images, but it's a difficult camera to use and is under-featured compared to its competitors.


20.7×13.8mm 4.7-megapixel sensor, 1.0x zoom (41mm equivalent), 291g

Enthusiasts had been crying out for a compact camera with a good lens and a large sensor, but none of the major camera manufacturer really flinched. In the end it fell to Sigma, a company that most people would associate with making lenses, to make the first move with the DP1 more than two years ago.

The DP1 was a strange beast in many ways, but what made it interesting was its unique Foveon X3 sensor. Unlike the conventional CCD or CMOS sensors used in almost every other digital camera, which can capture only one primary colour per photocell, the Foveon X3 is able to capture full RGB colour in every individual photocell.

Instead of using a Bayer mask filter to estimate RGB values for each photocell, Sigma’s Foveon X3 sensor has three receptors stacked on top of each other – one each for Red, Green and Blue values. These are buried within the sensor at precisely calculated depths that correspond to the frequency of the light – lower frequencies can penetrate further into silicon and so the red receptors are the deepest, followed by green and then blue.

Sigma DP2s

Like the DP1 (and the DP2), Sigma’s DP2s uses a 20.7×13.8mm sensor that produces 2,652×1,768-pixel resolution images. That’s quite a bit smaller than most of today’s cameras and works out at 4.7 megapixels, but it’s recording three times as much information per pixel so in theory it can produce the same amount of detail as a conventional 14.1-megapixel sensor.

Another unusual choice that Sigma made was to equip the DP2s with a fixed 41mm (equivalent) f/2.8 lens. Most camera manufacturers are tending towards wide-angle zoom lenses, but its equivalent focal length is similar to the 50mm prime lenses which older SLRs used to be sold with. It also means photographs look very natural with a perspective similar to the human eye.

The DP2s’s body looks quite dated by today’s standards, but it’s well built and made from metal. The 2.5in screen also feels rather dated and its 230,000-dot resolution makes manual focusing something of a black art. Even though you can zoom in to aid manual focusing, it’s simply not sharp enough to be of any use.

The controls feel a bit flimsy which is disappointing for such an expensive camera and – worse still – they’re confusing. The manual focus wheel in particular is fiddly and could be better positioned (we’d prefer to see a focus ring on the lens barrel) and the two buttons on the top right edge are awkward to use. The menu isn’t a place to find solace, either, as you’re greeted with almost retro styling and a clunky interface.

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Basic Specifications

Rating ***
CCD effective megapixels 4.7 megapixels
CCD size 20.7×13.8mm
Viewfinder N/A
Viewfinder magnification, coverage N/A
LCD screen size 2.5in
LCD screen resolution 230,000 pixels
Articulated screen No
Live view Yes
Optical zoom 1.0x
Zoom 35mm equivalent 41mm
Image stabilisation none
Maximum image resolution 2,640×1,760
Maximum movie resolution 320×240
Movie frame rate at max quality 30fps
File formats JPEG, RAW, AVI


Memory slot SDHC
Mermory supplied N/A
Battery type 3.7V 1,300mAh Li-ion
Battery Life (tested) 250 shots
Connectivity USB 2.0 Hi-Speed
HDMI output resolution N/A
Body material Aluminium
Lens mount N/A
Focal length multiplier 1.7x
Kit lens model name N/A
Accessories Wrist strap, lens cap, hot shoe cover, charger, software CD
Weight 291g
Size 60x113x56mm

Buying Information

Warranty 1 year parts and labour
Price £540

Camera Controls

Exposure modes program, shutter priority, aperture priority, manual
Shutter speed 15 to 1/2000 seconds
Aperture range f/2.8 to f/11
ISO range (at full resolution) 50 to 3200 (1600 and 3200 RAW only)
Exposure compensation +/-3 EV
White balance auto, 6 presets, manual
Additional image controls colour mode, contrast, sharpness, saturation
Manual focus Yes
Closest macro focus 28cm
Auto-focus modes nine-point contrast detect (multi, centre, point)
Metering modes evaluative, centre weighted, centre
Flash forced, red-eye reduction, slow sync
Drive modes single, continuous, self-timer