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Nikon DSLR Cameras
D7200
AI-S lenses on the D7200
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<blockquote data-quote="Pocono_ACE" data-source="post: 671058" data-attributes="member: 44850"><p><span style="color: #0000cd">I'm getting to know my new D7200, and so far I'm liking it a lot. The other day I mounted my old 50mm f1.4 AI-S, and was happy to see the camera meter with it just fine in A and M modes, as well as display the currently-selected aperture. That's all I need.</span></p><p><span style="color: #0000cd"></span></p><p><span style="color: #0000cd">Here's something I'm now wondering: My 80-200mm f2.8 autofocus lens dates from the early 90s, and therefore I'm nearly certain that it's a non-CPU lens. Yet it has communication contacts on the mount. Not as many as on the newest lenses, but still, contacts. The camera meters with the lens in A and M despite my not having entered lens data in the D7200's menu. What's going on here?</span></p><p><span style="color: #0000cd"></span></p><p><span style="color: #0000cd">If it helps, the lens is one of the earlier autofocus types, lacking an internal motor. (It also lacks a tripod mount, which kind of sucks.) Could it be that my autofocus zoom lens actually has a CPU, and that the extra communication contacts it's missing are for autofocus control? Does anybody have a diagram showing what each contact on the lens mount does?</span></p><p><span style="color: #0000cd"></span></p><p><span style="color: #0000cd">Addathome, you only paid 10 pounds for your 28mm AI-S? (I assume you're talking about pounds and not dollars, as "tenner" is an expression not often heard in the U.S.) That's a steal! My feeling is, is autofocus really all that important on a wide-angle lens?</span></p></blockquote><p></p>
[QUOTE="Pocono_ACE, post: 671058, member: 44850"] [COLOR=#0000cd]I'm getting to know my new D7200, and so far I'm liking it a lot. The other day I mounted my old 50mm f1.4 AI-S, and was happy to see the camera meter with it just fine in A and M modes, as well as display the currently-selected aperture. That's all I need. Here's something I'm now wondering: My 80-200mm f2.8 autofocus lens dates from the early 90s, and therefore I'm nearly certain that it's a non-CPU lens. Yet it has communication contacts on the mount. Not as many as on the newest lenses, but still, contacts. The camera meters with the lens in A and M despite my not having entered lens data in the D7200's menu. What's going on here? If it helps, the lens is one of the earlier autofocus types, lacking an internal motor. (It also lacks a tripod mount, which kind of sucks.) Could it be that my autofocus zoom lens actually has a CPU, and that the extra communication contacts it's missing are for autofocus control? Does anybody have a diagram showing what each contact on the lens mount does? Addathome, you only paid 10 pounds for your 28mm AI-S? (I assume you're talking about pounds and not dollars, as "tenner" is an expression not often heard in the U.S.) That's a steal! My feeling is, is autofocus really all that important on a wide-angle lens?[/COLOR] [/QUOTE]
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Nikon DSLR Cameras
D7200
AI-S lenses on the D7200
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