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eheathYeah basically every dslr will not have reliable auto focus while filming. Sorry bud
p.hawkslook at hyperfocal distance. There are many sites/apps that can calculate it for you. This will give you a range where everything within it will be in focus (you leave the lens fixed/on mf). AF during video is usually slow and hunts for focus, but with some practice you should be able to keep your subject in focus very well using this method.
EDolloStoneThe stepping motor only "continuous focus"s on the 70d and 7d and maybe the newest Txi, Your camera has to have to dual pixel thing to run an effective live af
akt416i tried this, it say for depth of feild:
Near Limit: 2.78 ft
Far Limit: Infinite
In front of subject: 7.2ft
Behind subject: Infinite
Does this mean that everything past 7.2 ft away will be in focus? or 2.78ft?
p.hawksThe way I am interpreting it, everything from 2.78ft to infinity will be in focus. I'm guessing you put a subject distance of 10 feet. The 7.2 is the range in front of your subject that is in focus. The best way to check is to try it out. Go outside, find a few objects you can use to check your dof. Find one thing at 10 feet, focus on it, then take a picture and see what else is in focus. Try to have objects at various distances to give you an idea on where the range ends.