Phew, thanks Rob,
I need to read this a few times.
I really first noticed the file size bit while we were doing stuff on the ' in camera processing ' thread.
Using NC to convert a raw to jpeg gave a file size twice that of in camera jpeg. Could not understand, so assumed that the NC converted must contain more info. Did my crazy pixel by pixel analysis and could not find it.
Thought I would come back to that later, and went no further.
Now as mr. average ( no specialist knowledge of the workings of computers ) I would assume that in digital photography, bigger file size = more available actual image information in that file. Obviously now an incorrect assumption.
As this info relates to two threads, I will pose a question that relates to this thread and one that I could not previously investigate due to lack of processing power. I will post a link to your info in the other thread.
Now I have my image, what advantage is there in upsizing the file ??
This comes from looking at DPR where some guys are upsizing 4.1mp D2Hs files as a matter of course.
Don