>If my understanding is >correct, shooting "Lossless Compressed RAW" might >meet your requirements for an eco mode. Page 86 of the >D800/D800E "User's Manual" says that this will >result in an approximate 20-40% file size reduction, >"...with no effect on image quality." This was >widely discussed in another thread.
That brings up an interesting question. If one really wants to be more space conscious, are you better off with loss-y compressed, or jpg? I would assume the loss-y compressed is still an improvement over jpg (14 vs. 8 bits if nothing else).