Thanks for your reply. If I say that the main purpose of making photos is to sell them in Istockphoto (for further usage by a large community of photo users), what would be your recommendations ? Should I use in Shooting control vivid colors, or standard or neutral etc.? Regarding lossless compression versus uncompress, if at the end the picture we sell is converted to JPEG format, should the conversion from RAW to JPEG be from lossless compressed RAW to JPEG or uncompressed RAW to JPEG ? Now a key question for me : Converting from RAW to JPEG, what would be the best setting to minimize the compression and maximise the quality of the JPEG photo ?