02-03-2014, 11:01 PM
Let's put a stop on it. In understood those points and am thinking maybe I didn't make myself clear enough. As I said before, with those lenses it's a lot more than only lens quality to get good sharp shots out of it.
Lensrentals used a backlit luminescent target instead a reflective one. I also think the usual 50× focal length rule could be questioned. As you already did, didn't you? 50×800mm is 40 metres.
Please don't bother about borrowing NASA vacuum chambers. Not much of us use these devices often
Lensrentals used a backlit luminescent target instead a reflective one. I also think the usual 50× focal length rule could be questioned. As you already did, didn't you? 50×800mm is 40 metres.
Please don't bother about borrowing NASA vacuum chambers. Not much of us use these devices often