Should Ansel Adams photographs require labels too?? The images he created were altered from what he saw by the chemistry of the zone system. The transformed gray scale permitted contrast control not previously attainable. One might argue that this is different from digital manipulation (I’d like to call it Gimping (free software) instead of Photoshoping recognizing the impropriety of both) but chemistry is messing around with electrons too. The assertion that there is a profound intellectual difference between an open-end wrench and a close-end wrench would be equivalent.