Disclaimer: PLEASE BE AWARE THAT THIS IS NOT A SCIENTIFIC TEST! THE FOLLOWING ARE JPEG OUTPUTS FROM THE MENTIONED CAMERAS AS THE X100 RAW FILES ARE NOT YET SUPPORTED BY ADOBE LR AND CS5. RAW PHOTOS WILL BE POSTED ONCE ACR IS RELEASED. ORIGINAL IMAGE ISO 200 ISO 400 ISO 800 ISO 1600 ISO 3200 ISO 6400 My notes: - The buffer on the X100 is definitely horrible. I am using a class 4 SDHC card (15mb/s | 16gb) and it takes the camera 7 seconds to store the ONE raw + ONE large jpeg file onto the card. I am still able to take photos however, the buffer freezes the camera up and prevents me from changing ANY settings. This has become an issue in the field. A faster card is on it's way (45mb/s | 16gb) and that supposedly lowers the time down to 2 seconds - which is faster, but is still a slouch. - The 7D and the 5D are definitely a lot faster with bigger buffers and of course, I didn't experience any slowdowns - which is of course expected. - The X100 does have a significant amount of in-camera sharpening when it outputs jpegs but all of the settings were set to it's standard. - It appears to me that the X100 does not have chroma noise but it's more grain like in comparison to the other cameras. - After looking at these files for about an hour, I still don't know how many stops of advantage in terms of noise you'd get from an X100 compared to the 7D - to me, it looks like one stop. - Oddly enough, the white grate behind the light stand starts to disappear ISO 3200 on the Fuji X100 and detail is lost by ISO 6400 I hope that you've enjoyed this test as much as I have. It's definitely feels nice to have a pocketable, lightweight that offers high image quality - one that you don't have to worry about/that is comparable to something like a 7D/5D, and has both manual and automatic features. I hope that Fujifilm will continue to develop this lineup - one that offers interchangeable lenses as there definitely is a market potential for these types of cameras.