RAW files with embedded jpg

["Doug Johnston" <doug johnston gmail com>]

Nikon NEF files have the option of embedding a fullsize jpg inside the
raw file. When opening files without these embedded jpgs that the raw
data is used to display the picture. Perfect.

However, if an embedded jpg exists, it is used instead of the raw
data. This is a good step when scrolling through photos, as decoding
the jpg is quicker. However, the problem is that if a user sits on a
picture, the raw data is never used! Instead, the relatively
low-quality embedded jpg continues to be displayed.

I have not tested this with other raw files (ie: CRW). Running the
current, unpatched cvs.

--Doug