I have read somewhere that when shooting at 24p, subject has to be within the frame for around 7 seconds to prevent stuttering and other artifacts. However, when shooting a really fast scene like chasing, do I crank up the shutter speed to prevent stuttering? Or, do I just forgo the 24p?
Shooting fast moving scene
- Thread starter Lor
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AwakenedFilms
Veteran
Your question is more subjective than a simple yes or no response can answer. Yes, you will have 'stuttering' of motion on 24p (and 25p and 30p). This is because of the nature of the frame rate and the amount of change between the frames during fast motion. A bigger problem than a fast moving object in frame, is the movement of the camera. Do a search on "asc pan speeds" for more information on that subject.
That being said, virtually every 35mm (celluloid) motion picture is shot in 24fps. That means action flix like Saving private ryan, apocalypse now, the bourne series...etc were all shot at 24 frames per second. 24p gives you a film-llke cadence, kind of dreamy, and yes, kind of stuttery. 24p is an aesthetic choice and works with fast paced action as well as talking heads and slow moving dramatic images.
Changing your shutter speed will give you dramatically different effects - lower than 1/48th gives the image more motion blur, higher than 1/48th makes it even more stuttery (like a zombie flick or saving private ryan). Changing shutter speed will not, however, change the frame rate.
If you are shooting sports action and want that NFL flims look, shoot in 24p (or 60p and conform it to 24p). If you are shooting sports action and want that news, sports center look, shoot in 60p or 60i.
The best advice I can give you is to test before you shoot the real thing. Then you will know what tools you need and how to set them up for the right look.
Jason
That being said, virtually every 35mm (celluloid) motion picture is shot in 24fps. That means action flix like Saving private ryan, apocalypse now, the bourne series...etc were all shot at 24 frames per second. 24p gives you a film-llke cadence, kind of dreamy, and yes, kind of stuttery. 24p is an aesthetic choice and works with fast paced action as well as talking heads and slow moving dramatic images.
Changing your shutter speed will give you dramatically different effects - lower than 1/48th gives the image more motion blur, higher than 1/48th makes it even more stuttery (like a zombie flick or saving private ryan). Changing shutter speed will not, however, change the frame rate.
If you are shooting sports action and want that NFL flims look, shoot in 24p (or 60p and conform it to 24p). If you are shooting sports action and want that news, sports center look, shoot in 60p or 60i.
The best advice I can give you is to test before you shoot the real thing. Then you will know what tools you need and how to set them up for the right look.
Jason
Thanks for the response. I was thinking about moving the camera and shooting the actor runs. Or, panning really fast to shoot the actor jump across a ditch or building. So, are you saying since I'm shooting at 24p, I just have to live with the stuttering images for fast moving scenes?
diego1235467
Well-known member
What Luis said is probably the most important thing. As long as you follow the subject, the viewer is able to ignore the strobing background.