I went to film racing event last weekend with my GH3. I've remembered playing with this option on my GH2 but then never require it really. I wanted to give it a go on this event.. and it dosen't activate. I mean it's available and goes to "ON" mode in menu but does not affect picture at all (it's still same focal distance being displayed.)

I have being played it with different manual recording modes and while in preveiw and actuall recording mode. Tried different codecs and resolutions. I've swaped and tried 3 different lenses (20mm lumix, 35-100 lumix and 45olympus). I went to menu and used "Reset" option to bring camera to factory settings. No result

Is there something I'm missing any advices before getting myself introduce to Panasonic customer service :) ?

Thanks