Originally posted by Photong Is this the crippled K mount phenonemon (I thought it was only for metering)? I actually enjoy using "M", but having the option of using "A" would be nice.
You'll notice the pin on the back of your m42 lens, if you push that in while it's set to auto the lens will stop down, and open up when you release it. The pin is the equivalent of the lever on later K lenses. Digital (and probably late film) cameras have no way to depress this pin, which is why you have to manually set aperture on a m42 lens.
Originally posted by raymeedc Put your camera in AV mode. As you select the aperture you want, the camera sets the shutter speed, visible in the viewfinder ... The only downside is that you have to remain at that stopped down f stop to shoot. If your selected f stop is too dark to allow accurate focusing in some situations, you might want to focus before you meter.
Yip, my K200D works the same way. I focus and compose, then stop down if necessary. I found that some m42 lenses require more or less exposure compensation wide open (or stopped all the way down) than they do around f8. It just takes some getting used to. If that's the price for using 40+ year old great lenses it's certainly a small one.