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Sigma DP1 Merrill review

Sigma's large sensor compact camera with Foveon x3 sensor

We shoot a specially designed chart in carefully controlled conditions and the resulting images are analysed using DXO Analyzer software to generate the data to produce the graphs below.

A high signal to noise ratio (SNR) indicates a cleaner and better quality image.

For more more details on how to interpret our test data, check out our full explanation of our noise and dynamic range tests.

Here we compare the Sigma DP1 Merrill with the Panasonic LX7, Fuji X100 and Olympus XZ-2.

JPEG signal to noise ratio

Sigma DP1 Merrill review

These results show that the Sigma DP1 Merrill's JPEG files have a low signal to noise ratio when compared to those from the with the Panasonic LX7, Fuji X100 and Olympus XZ-2, coming in just above the Olympus at ISO 100-200, and bottom of the pile at the higher sensitivities that it was able to reach.

Raw signal to noise ratio

Sigma DP1 Merrill review

The signal to noise ratios of the TIFF images (after conversion from raw) from the Sigma DP1 Merrill are slightly stronger, beating the Panasonic LX7 throughout its whole sensitivity range, and the Olympus XZ-2 at ISO 100-200. It produced weaker results than the Fuji X100 at every ISO setting, however.

JPEG dynamic range

Sigma DP1 Merrill review

For dynamic range in its JPEG images, the Sigma DP1 Merrill sits at the bottom of the pile, with the Olympus XZ-2 coming out on top, followed by the Panasonic LX7, then the Fuji X100.

Raw dynamic range

Sigma DP1 Merrill review

This chart indicates that TIFF images (after conversion from raw) from the Sigma DP1 Merrill are second-strongest at ISO 100-400, sitting just below the Olympus XZ-2 and above the Panasonic LX7 and Fuji X100. It comes out top at ISO 800, the top of its measurable range.

Tech Specs

Product TypeCompact Camera
Battery Size SupportedProprietary Battery Size
Maximum Video Resolution320 x 240
Effective Camera Resolution14.1 Megapixel
USBYes
ColourBlack
Digital Zoom3x
Brand NameSigma
Screen Size6.4 cm (2.5")
Video FormatsAVI
Viewfinder TypeNo
Weight (Approximate)250 g
Minimum Focus Distance300 mm
Maximum Image Resolution2640 x 1760
Maximum Frame Rate30 fps
Number of Batteries Supported1
Display Screen TypeLCD
HD Movie ModeNo
Memory Card SupportedSecure Digital (SD) Card, Secure Digital High Capacity (SDHC) Card, MultiMediaCard (MMC)
Height59.5 mm
Width113.3 mm
Depth50.3 mm
Autofocus Points9
Focal Length16.60 mm
Image FormatsJPEG, RAW
Audio FormatsWAV
Focus ModesAuto, Manual
ManufacturerSigma Corporation
Product ModelDP1
Product NameDP1 Compact Camera
Manufacturer Part NumberC7S900
Manufacturer Website Addresshttp://www.sigma-imaging-uk.com
Marketing Information

The DP1 uses the same 14 megapixel (2652×1768×3 layers)direct image sensor as the SD14. Utilizing the special features of silicon, which is penetrated to different depths by different wavelengths of light, this direct image sensor succeeds in full-color capture with the full RGB in a single-pixel location. Just like film, each photodiode captures all the RGB data, so no final-stage demosaicing is required.

Display Resolution230000 Pixel