The following lenses can all be used on EOS bodies with full range focus to infinity. You can use full manual metering, or aperture priority auto. There is no auto diaphragm or open aperture metering function. The exposure needs to be made with the lens set to taking aperture. This means the viewfinder image will darken as aperture decreases. There will be no aperture read-out in the viewfinder. Get into the habit of focussing at full aperture, then stop down to taking aperture before making the exposure.