Originally posted by Aelindgard Thanks Scott. Just to clarify, when I have it fully open and inAV mode what should mybf setting on the Q body be set to? Same as I had manually set on the lense or f1.0 as I am sure tge Q will not be able to read the f setting of the lnse as there are no wires etc. I have ordered the same adapter you had.
Hi Aelingard,
I'm not quite sure what you're asking. You are correct that the Q body cannot read an f stop setting from the lens because there is no electrical communication between the lens and the body. The body will show f-- on the veiwfinder. The aperture setting is whatever you set on the lens, and with a DA series lens, you'd start at the max aperture, and with every click of the adapter's aperture ring, I assume @ 1 stop change from that, so if you have an f4 lens, it would progress from that to f5.6. f8, f11, f16, etc with every click. Since the lens is stopping down manually, the meter is working with the light it receives through the lens, and in Av mode, sets the shutter speed accordingly. If you are also using Auto ISO, my experience is that the camera will tend to try to keep shutter speeds around 1/100-1/125 or above, and go to a higher ISO if that's not possible. The camera does not need an f stop value from the lens to allow full exposure automation, it just uses the light that's allowed through the lens and sets the shutter and ISO accordingly.
Hope that clarifies things. . .
Scott