Actually in this case it's an old manual focus, manual aperture lens. So I set the aperture via a ring on the lens. So if I set the lens to f/8 while using it on a Canon body it steps down to f/8 right then making the viewfinder dim. One of the problems with using these adapted lenses.

If only I could blame the 800 for the back problems. But it's my own fault for letting the Army talking me into parachuting out of perfectly good airplanes. Nothing like crashing into the ground repeatedly to give you back and knee problems as you get older, LOL!!

But man was it fun while I was doing it!