I look at old photos from the late 19th century and early 20th century such as on Shorpy and when they are blown up, I can't honestly tell the difference in quality between these photos and what my Nikon D5000 can take. Now I'm just an amateur photographer, but to me it seems like photo quality has stayed pretty much constant since photography was invented.Is this true? If not, what accounts for the good quality of old photographs?
>>> Would it be safe to say picture quality has always been constant?