Originally Posted by jp498
if you mount a transparency box illuminating with 3200K light a transparency photograph made for 3200K, in a room generally illuminatined by 5600K ligh, then, depending on the luminance level between the room and the transparency, the photo may look quite warm if it makes only part of the field of view. Looking soly at the transpareny box, thus from nearby, everything would be normal again.
The same for comparing a transparency made for 3200K illumination and a reflective print made for 5600K side by side:
If the transparency box is masked to only show that transparency and the reflective light box has a black desk the print is lying on, everything is perfect.