Following Michael Reichmann's recent comparison of JPEG and RAW I decided that this issue needed properly exploring in our EOS-D30 review. So, I've now evaluated JPEG vs. RAW for the EOS-D30 at all ISO sensitivities. My findings? That up to ISO 400 there's little to choose between the two (other than the added flexibility of RAW), however at ISO 800 and 1600 the noise appears to cause some JPEG hue errors and thus it's better to shoot RAW at these high sensitivities.