Marco, You can make the painting analogy work with a bit of effort.
Not unless the only objective of the painter is "photographic realism", which I find pretty boring in most (but not all) cases. Otherwise such knowledge as you suggest (about the conditions under which the painting was 'observed') has absolutely nothing to do with the appreciation of that painting. Nor would it really have much to do with your appreciation of photographic realisim except at the level of how well it succeeds at technique. Whether it moves you has nothing whatsoever to do with technique, or, at best precious little (IMHO).
Marco