Sigma's cameras are fascinating. They look like something found at an alien crash site and the predecessors of the Quattro series, the Merrills, were notorious for having many different foibles and flaws.
I was hugely interested to test one out and see for myself just how they perform. For a full, detailed review of the Sigma DP1 Quattro click here
This review is brought in conjunction with the great guys from Shutter Journey Singapore - thanks again Allan!