Joined: Jan 2013
Quote:Firstly, use an old, fully manual lens on your digital body – one of those lenses where the aperture control ring is on the barrel of the lens. On the lens mount, you need to jam something (a small piece of plastic is good) into the gap on either side of the small lever that controls the aperture size in order to fix it at one position. This way, the aperture is stuck at the f-stop you designate and cannot open and close as normal when the camera shoots a frame, thus eliminating any potential fluctuations. This method is a bit fiddly and it means that you have to predetermine your aperture before you attach the lens to the body.
Doesnt a manual lens stay fixed at the f stop at which you set it? It does at least on my old Nikkor manual primes...