Hello,
I've got a qustion regarding the AF/MF switch on the 80-200 D-ED. I wonder
how exactly the lens tells the body to turn off the AF motor. I'm pretty
sure there's no other way than using the lens CPU contacts. Now what
exactly happens? I don't know to what degree Nikon's body/lens
communication interface has been disclosed or reverse-engineered. I can
imagine two ways for the 80-200 to stop the body's AF motor:
1. It plays dead ("I'm an MF lens")
2. It says "I've got a CPU, but dont AF me"
Version 2 would require some kind of constant function negotiation between
the lens and the body.
Version 1 would have the side effect that many AF bodies can't work in
matrix metering mode with the 80-200 in MF mode (does not apply for the
F4).
Does anyone have an idea about what the lens does exactly? I've got a 6006
as backup body and would like to know what happens if the lens is set to
MF operation.
Thanks a lot!
Cheers
Boris
boris dot achermann at switzerland dot org
