As noted before, the in-camera jpeg created by the SD1 often has blown highlights when it’s not even close – see above example. Above shot was taken using ISO200 – ISO100 would likely had been blown for real.
Here hoping for Sigma to add some to that jpeg so I can trust what I see on the LCD a bit better. And no, the above shot isn’t finished like that. :) It needs a bit of contrast etc.. But still, works as an example.
