Hello. I'm a humble 5D JPEG shooter. I'm thinking of getting an mk2 but had some questions for those with an mk2 (esp those JPEG shooters). 1) What is the largest file size that comes from the JPEGs on the mk2? 2) Do I lose the benefit of 14-bit/DIGIC IV by shooting JPEG on the mk2?3) Given that I would have 21MP on mk2 vs 12.8 MP on 5D, would that mean less loss when editing JPEGs from the mk2 (given that RAW generally preserves more detail when editing)?4) Any JPEG shooters find that the mk2 is more convenient than the 5d? I would think that vignetting correction, highlight tone priority, etc. would be nice for JPEG shooters. Any advice from the experts and fellow enthusiasts is appreciated. Thanks!

14 bits recording only yields very slightly better results when pulling up extremely underexposed images, in practical use there's no difference to 12 bits.About the JPEGs, there is more convenience but they have an awful soft look due to the new, much stronger noise reduction. I hardly ever used raw on Digic 3 models but I do now. The difference is visible even with quite bad lenses (one of my tests was with a Sigma 24-70 4.5-5.6, that's a $100 lens).Here is a comparison I made: http://leitseite.net/photo/tests/5d2_raw/BTW, dcraw can extract the embedded preview-JPEG from the raw files, so you don't need raw+jpeg. The preview image is smaller (2-3 MB) but quite sufficient, given the soft look the firmware processing gets them.

I never shot JPEGs on my old 5D and don't intend to on the Mk II. I use Lightroom, and it makes it straightforward to use RAW. No need to do conversions - but if you need to convert to JPEG, LR (or CS4, Capture One, etc) will do a better job than the in-camera conversion. As far as I am concerned, there is only win-win with RAW.