I upload a lot of my photos to Flickr, but of course since my camera doesn't know what the aperture (or focal length for that matter) is when I shoot with my Composer, the EXIF relfect that.
I started looking about for EXIF editors but I could only find really complicated pieces of software that I tried but could never figure out how to operate.
Is there a simple, elegant, don't hurt your brain solution to this (admittedly minor) issue ?