No, it's not a clever file format to use in many instances. Converting to JPEG should be the last step taken when working on a file. It was designed to save space and provide a reasonable representation of the image for use in specific situations, like on web pages where space is often more important than ultimate image quality. BTW, technically JPEG is not a file format. It's an image compression mechanism.
If you're using a digi and shooting JPEG for whatever reason, it's best to convert the file to a TIFF, or PSD, or some other lossless file format, maybe even convert it to 16-bits as well (Rob suggested that to me at one time and I always do that these days), before doing any work on it. Shel > [Original Message] > From: mike wilson > > Each save was made at the highest resolution and least compression possible. > > > > Shel > > In which case, there is no sensible logic to it. If you tell the programme to save the file at the biggest possible size, the logical thing, to me, would be for it to save everything. If it proceeds to chuck away information after getting that instruction, it is not a clever file format for photographic use.

