GHK wrote:
When you open, let's say a JPEG, you bring it into the chosen program, at which point it ceases to be a JPEG. After editing you can resave it as a JPEG if you wish, but tou can also save as PSD, TIFF, or any other appropriate storage format.
GHK
We have no need to know that it is no longer a jpg once inside a program. That's useless information even though it may be correct, nor do we have any control over that. Otherwise, the fact is that if a file has undergone the compression inherent in a jpg, you can save it as a tiff but it will never have more information in it than it had as a jpg so it is irrelevant whether you save it as another format beyond moving it from a lossy to a lossless format. It becomes a jpg in a tiff's clothing.