Closely related to the company's existing DP1 model, the Sigma DP2 is based around a 0.98" diagonal Foven X3 image sensor, which has an effective resolution of 4.64 megapixels with full color measured at every pixel location. The sensor sits behind a 41mm equivalent fixed focal length Sigma lens, and offers ISO sensitivity from 50 to 1,600 equivalents.

Sigma DP2 firmware version 1.04 will improve one specific function of the camera, according to the company. The main change of the new firmware will be autofocusing speed - the first time this has been addressed in the camera's firmware, although two previous updates have fine-tuned autofocus accuracy.

Sigma is predicting the new firmware to become available on Friday, March 26, 2010. We'll have more details at that time, so Sigma DP2 owners will want to keep an eye on our news page for the full story.