Tips for shooting professional POV footage I'm working on a video for a client and they are wanting to tell a story in video shot entirely in POV.

My initial thoughts were GoPro but i think it doesn't give the same quality as a DSLR. I'm thinking about using a helmet mount what are your thoughts on this?

Is there anything i need to consider when filming POV footage for example

Which lens should i use for POV? (i have a canon mark 5d III)
Is there a particular camera set up or filming techniques should i use to get the most of the POV footage?
How should i instruct my actors who will be wearing the camera? 

Or is it just as simple as mounting a camera to your head?
I wouldn't mount a camera to your head - that might result in a) really nausea-inducingly wobbly footage that's much higher than the average eye-height and b) a sore neck. Instead, I'd go for a shoulder rig (something like this: http://amzn.eu/ixifFeM - DISCLAIMER: I haven't got one of these or used this model so this is not an endorsement, just an example). I've shot a POV film before and this was absolutely the best way we found to do it and gave great results (make sure your operator is of average height, though, otherwise you'll be looking up/down at the scene, unless, of course, that's the look you're going for - don't mean to be mean, just something to consider).

You'll get the camera to eye-height and will have much more stability and the ability to capture some excellent shots without having to stretch up with a gimbal or whatever.

The best thing about this is that you can use whatever body/lens combo you'd like (within reason :P).

Remember, though, that humans do have selective focus so you'll need a focus puller and some way for them to operate.