Autofocus and humidity
I have been using my 1D mk III with a variety of lenses recently and intermittently I find the autofocus is not working. If I touch the autofocus ring it starts off and then focuses ok. It is seems the AF is slightly sticky and I wondered if others had noticed this problem or whether I should take the body back to Canon - I suspect it might be down to high humidity but I am not sure.
Thanks
Andrew