No image is ever objective, but I would say there is scientific subjectivity that would qualify as a what we would commonly refer to as “objective”. The main difference being the methodology of the capture. Something that is captured scientifically aims to record/capture as a way to analyze which can be different than documentation. Typologies lay at the intersection of this. Several different documentations together can create an analysis of common features. The reliability of this is still dubious, but the methodology does give the credence of reliability.