lense not detected
43 minutes ago, xQubeZx said:
Nikon entry level and mid tier prosumer bodies don't really have all the features necessary to work with old manual lenses. While they may have a menu item that the photographer can enable to trigger the shutter without a lens attached/detected stuff like properly metering the exposure through the lens or even manual focusing will not be easy.
On pro bodies like the D300/D500, D600 and above, there is a metal ring with a small tab that is around the lens mount. In the photo below the metal tab is near the 1 o'clock position around the lens ring. This metal tabbed ring doesn't do a thing when used with modern lenses that do not have a manual aperture control ring. But when using older lenses with a manual aperture ring which has a small protruding part, like in the lens below, turning the aperture ring on the lens will move the position of that tabbed ring and let's the camera know the aperture dialed in on the lens. This lets the camera's internal exposure metering system know the aperture setting on the lens so that it can work in Aperture priority mode.
If you don't want to turn the aperture ring manually, you have to set the aperture ring on the lens to the smallest aperture. This assumes that the lens has another tab that will allow the mechanism inside the mirror chamber of the camera body to dial in the aperture on the lens.
Some less older lenses have a lock on the aperture ring to prevent accidental turning of the aperture.
Also in the "pro" bodies, the setup menu has an item called "Non-CPU lens data" where you can tell the camera the specs of an old lens that does not have any electronic contact points or chip inside the lens that communicates with the camera. Since a lot of these old lenses are prime lenses, you just have to tell the camera the lens' focal length and maximum (widest) aperture. You can save profiles for up to 9 lenses, at least in my Nikon bodies.
I don't think Nikon really expects anyone who buys their entry level bodies to use old lenses, I assume they expect people to stick to the basic kit lenses or buy modern lenses. Modern DSLRs are not really designed for full manual work, especially manual focusing since the focusing screens inside the mirror chamber are not well designed for MF. I remember Canon selling different focusing screens that you can manually replace yourself, and when I had my 5DII I bought one (not cheap) and it didn't improve things that much.
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