To be truthful, everytime I look at an image produced by the SD9, I spend more than a moment looking at it just because its crispness is stonking. I'm honestly impressed by the image quality of Sigma's at low ISOs. The SD10 improves on picture quality at higher ISOs, which is good. However, it does lose a little crispness. This is an impressive piece of equipment on its own & it probably edges the current crop of mid level dslrs by a little. It is impressive, but perhaps not enough to make people jump the ship, given the poor resale value of Sigmas and the poor availability of used equipment available. This itself, is a major drawback in this market where budget is an issue. And, many dslrs are currently near the end of their series, in which the newer ones could be better, could is the word. This uncertainty does no favours for the SIgma which prices not too competitively. I like the SD10, but its risky to jump the gun for people like me where value for money counts. This introduction will no doubt have an affect on the prices of current dslrs, and probably rush the drawing boards of many other companies. Which is a good thing.
The bottomline is ... the Sigma may have caught up with the rest at this point in time, but a time where they are preparing to make the next leap. :think:
Its a sad thing honestly. Because Sigma has progressed so much, yet not appreciated through increased mkt share.
Just my 2 cents