cputeq Offline Upload & Sell: Off
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gyoung143 wrote:
Before the advent of fly by wire, 'manual focus' lenses had a hard stop infinity, even my old Nikon AF lenses have hard infinity stops. All my Leica,Nikon and 'alt' manual focus lenses have accurate hard infinity stops, and very useful they are too.
Gerry
I haven't been shooting for 50 years (much less been alive that long! ) but I'd say you've been blessed or perhaps film 'hides' certain flaws (just like low-MP cameras can hide lens or AF flaws).
I say this because I've also used MF lenses on their native mounts and so far only one infinity hard-stop has ever been accurate - I think it was an adapted Canon FD 20mm on a Sony A7, of all things.
Nikon 105/2.5 AIS, Zeiss 35/2 (ZE), multiple Pentax AF lenses using MF (all native mounted), etc. have all been off at infinity (the ZE 35/2 was close, but required about a 1mm 'back off' after hitting the hard stop). I think my late grandmother's film Canon (something) with her 50/1.8 FD was even off, but I'm going off really fuzzy memory on that one.
I really dislike it, because I really like hard-stops for things like astrophotography, but they've been very elusive to me!
Even with Fuji's AF/MF lenses with the MF clutch and hard-stops on the lens....the lens will electronically focus past infinity slightly after hitting the lens hard-stop. I have to believe this is to account for 'slop' in manufacturing or environmental concerns.
And I have to wonder if such 'slop' is accounted for because some are in the habit of zooming in to 100% on high-MP images, looking for problems
Most of my hard-stop concerns have been very slight, in that had I taken the photo past infinity and had it printed, the problem may or may not have been noticeable.
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