I know that there is a chip in the Tamron 1.4X C-AF1 MC4 converter because I've seen
it. (I had to take mine apart to release a stuck contact.) What it does, I'm not
sure. It doesn't communicate the effective aperture to the camera body, that's for
sure.
Geoff Doane
Don Weiss wrote:
Does any teleconverter have a chip in it?
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