File :-(, x, )
is there a camera system that does this Anonymous
on my old nikon slr, i have an aperture ring on my lenses

if it's not mounted to the camera, turning the ring closes the iris, i guess it's called and i can see the aperture blades close as i turn it to f/22

if it's mounted on the camera, it stays wide open all the time until i click the shutter, it makes the viewfinder as bright as possible, i get it

is there a camera system that actually closes the iris down as you turn the aperture ring when the lens is mounted? is that how it works on old old lenses?
>> VF-19
The old Pentax Spotmatics used a stop-down metering system with M42 (aka screw mount) lens. You flick a switch on the camera body, and it depresses the pin on the lens to close the aperatuere down to what you have it set for.

Also most M42 there's a little switch that sets the lens to auto (wide open, until you push the shutter) or manual (you have to manually set the aperature before you shoot).

Most later cameras have a depth of field preview lever mounted on the body that releases the aperature to what you've set it to, but you'll have to consult the manuals to find out which ones do.
>> Anonymous
pentax

or buy old manual lenses to use