Gordon, the camera does the metering, not the lens. You only have to do the focusing with a manual lens.
Or am I missing something in your question?
I think I may be confusing myself, will have to think again and come back.
after thinking a bit more.......
If there is no chip in the lens, how does the camera know what the aperture range is?
Can you use automatic modes, or do you have to use manual exposure?
If using manual mode on the A350/550/700 bodies which have no auto ISO in manual mode, how do you get correct exposure?
Do you have to preset the aperture on the lens, then set that aperture in manual exposure mode
Its may be really simple, but I cant get my head around it.........