Hey Guys, I shoot climbing videos and am heading to Alaska in a couple months to shoot an expedition on Denali. I sold my 5DmkII for a GH3 to lighten up my kit, which I will be able to do by POUNDS! But now I'm feeling like a newbie all over again with operating the camera. With the 5dMKII shooting video was a no brainer...camera always in manual mode, turn on live view, iso already set at 125 or so, turn dials to get exposure right, push button to get critical focus, and press record. If focus changes you have to do it manually therefore a few racks here and there to mix things up but most of the time focus didn't change too much. Most of the time handheld with lens image stabilization was plenty to counter small movements. Here are my issues and questions.....maybe someone can shed some light. I got the GH3 to lighten up my kit but also to hopefully be able to take advantage of some features that the 5dMKII didn't have which cost me precious shots. 1) smooth auto focus in video mode. nothing like it on the 5dMKII. If I'm shooting someone fairly close up I want to be able to keep them in focus without having to do it manually....seems like the GH3 might be pretty good at this, even a shot with someone walking towards or away from me, I bet the GH3 can keep them in focus, well at least in a more efficient and stable way than I can handheld. Okay so I understand changing focusing mode is another step I will have to remember to do, not too bad. What about other types of focusing...a lot of people seem the still use the GH3 in manual focus mode saying auto focus is no good. Anyone had great success with auto focus? I loose shots in manual mode so I expect to loose shots in auto-focus, but if I can improve my success rate with auto focus it might be worth it but so far there is a lot of hunting in auto focus mode which kinda ruins the shot. 2)Exposure....so I will be in an environment where the light will be pretty consistent. What's better, shutter priority with set ISO and variable aperture, or can I set aperture and shutter speed and go with variable ISO? 3)Video quality settings. 5dmkII always 24p MOV. The GH3 shoots this but at a higher bit rate....larger file sizes and I am going to be away from laptop and power for three weeks, so I've got capacity for maybe 800 gigs but at 50mbs that's just over 75 minutes a day of shooting...probably enough but I can't be certain. Also the video is slow-mo looking on LCD screen....kind of annoying. Is my flash card not fast enough or is this just how it is? AVCHD? whats up with this? Definitely need to test with lower bit rate AVCHD and MOV. I'm not making a movie for the big screen but my client has come to know the quality of my video so I don't want to change that. Just looking for the best video settings. I don't like the way the GH3 displays exposure in manual mode...definitely something I will have to get used to. Obviously I'm going to do some testing, but would love to be decently educated before I head out testing so hopefully I can nail down what works and get comfortable with that rather than a bunch of video that doesn't work and still being confused. Thanks in advance!