This weekend I'm shooting some sports footage where the client has requested a lot of slow motion footage to mimic an NFL films look. I will be posting in Final Cut and am used to playing with speed there, but usually it's a decision that gets made in post. Since I have the luxury of knowing this stuff will be slow mo how should I set up my camera? Best shutter speed, etc? Any other shooting tricks?
Everything will be exterior existing light, but it is "staged" where I can get multiple takes.
If you shoot 60i and the rest of your project is 24fps, you can slow-mo the 60i footage down to 40% and it will correctly drop on a 24p timeline frame-for-frame.
Secondly, crank up your shutter speed. I'd go with about 1/120th to 1/160th of a second. That will give you the proper motion blur (or lack thereof) for the 40% slow-mo.
Keep in mind that 40% is slow-mo, but it's not really really slow slow-mo. If you want to go slower than that, you can go to 20% but every frame will be doubled and will probably look quite stuttery. NFL Films typically uses slow-mo that is a lot slower than that.
If you do need to go slower, I would use one of the various pieces of frame interpolation software to re-create the "missing" frames.
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