Compact body of Sigma DP1x makes it much easier to carry it with you all day. 250g
This camera is so light that you can comfortably carry it around all day. Large APS-C (20.7 x 13.8 mm) sensor
Large sensor in Sigma DP1x ensures a good low light image quality compared to smaller sensor, and it also provide shallow depth of field and a nice blurry background when needed. RAW shooting capability
RAW files contains much more color information compared to JPEGs, and gives you more room for post processing without significant quality loss. They provide wider dynamic range and option to recover shadow and highlight clipping to some degree.
Body Thickness 50mm
With a thickness of 50mm,Sigma DP1x is not a pocketable camera for sure.