It depends. If they have an attitude about how easy it is to push a button, I switch it to M and MF and hand over. I usually place the strap around their neck myself, lol.
If they're nice and I'm offering a try, then I'll through it into Av or some other auto-ish mode (my camera doesn't have a green box) and let them try it. The back button focus take a minute or two to get used to.
Cruel but i like it!





