Hey everyone, I will be shooting a promotional video for a friend's clothing line later next week and I will be using my girlfriend's 7D. I normally shoot with a Nikon d5000 but it only shoots 24p in 720p and I would like to add some slow motion in the video. Because I have the opportunity to use the 7D for the project, I want to take advantage of 1080p so I will be shooting in 30p and I was wondering if I could get a smooth slow motion effect without having to bump up to 60p and lose quality? I only want to slow down the footage to about 90% of the speed of a 24p frame rate. I will be shooting during golden hour outside in a forest type environment and so I'm wondering what shutter speed I will need to shoot at so that I can slow the footage in the time line later while also having decently exposed shots. I plan to have a few flares here and there. Any ideas?

If you shoot at 30P and slow it down to 24P by reconforming the footage in post, you will get slow motion at 80% of real-time.

If you want do it it this way make sure you have a solid idea of what shots you want to be in slow motion and which ones you want to be in real time, becuase you'll need to shoot the real-time shots at 24P. Failing to do this will mean you be getting blended frames on some of the clips when you mix them on the timeline.

As for shutterspeed, shoot the whole thing at 1/60th and it will be fine.

-John
Thank you very much for the helpful input!