The 1600 ISO setting has been criticised for loss of detail, but at this pixel density - requiring a lens resolution 60 per cent higher than the Canon EOS 5D for the same level of pixel perfect imaging - tiny differences in focus distance really show. The test used a very high resolution lens, but even at f13 this 100mm objective doesn't have unlimited depth of field. The focus point (always, apparently, preferring foreground detail using wide focus) is in front of the right-hand donkey, and you can't judge the trees on the distant hill - they are beyond the depth of field. Study the grasses - many at 45 degree angles - in the top left of this clip at 100%. Consider their extremely low subject contrast. Personally, I think the Alpha 100 is turning in an amazingly detail in-camera processed JPEG at 1600. I'm very surprised that people don't consider the images sharp. Don't confuse differential focus with unsharp sensor imaging. You rarely see a native original resolution image like these on PBASE (for good reasons) and this represents a section of a picture some 35.5 inches wide by 54 inches long on your 'virtual screen' at 72 dpi.