60fps to 24fps question

[Samir Patel]

Hello everyone. So it may be a while til I can upgrade to the Scarlet-W and so I have shoot coming up next week - fashion runway and while I would love to shoot it in 120fps I'm still on Scarlet-MX.

I have been shooting a bunch of stuff recently at 48fps at 3k which I like - but I wanted to go to 60fps this time for which I would have to window down to 3KWS.
But in this case would I just shoot 60fps and let the camera record to 23.98? Or am I supposed to be shooting at 59.94fps and let the camera record down to 23.98?
Will I have any issues if I did either with artifacts or lighting anomalies?

or.. should I be shooting full 60fps on a 24fps timeline and just convert over in my NLE??

Thanks for any input

 

[David Battistella]

Check out this article for some background.

I would keep the timebase at 23.98 (this way you will not loos about a stop of light which you would shooting at 59.94 (29.97x2) at 30 or 24 FPS.

If you need I am not sure you will actually be able to capture 60 FPS at 59.94 and I would run a test, otherwise there is no advantage to a 59.94 timebase, I do not think the camera will be grabbing 60 frames at 59.94 you might still be maxxed out at 48, in which case shoot at a 23.98 timebase for the extra light.

David




https://library.creativecow.net/battistella_david/Film-Style-Slow-Motion/1


Red has a recent article up as well.

http://www.red.com/learn/red-101/slow-motion-video

 

[Maik Müller]

David, i'm not really following that thought about losing (or not losing) light with changing the timebase. The amount of light is influenced by the capturing frame-rate and shutterspeed, but the timebase? It doesn't matter if i shoot 60fps/180 for a 60fps timebase or 60fps/180 for a 24fps timebase. You'll get the same images, just played back slower by default with the second setting.

From a practical point of view the project framerate/timebase is just the playback-rate, it doesn't touch exposure and doesn't change the content itself at all. Sure, there is more to that, but if you are just a one man band with one camera i admit i'm treating it as playback rate and don't care about much more.

In regards of 23.98 vs 24 / 47.96 vs 48 and 59.94 vs 60 and not to mention 24 vs 25 & 50 vs 60 . That's where we get into the area of adjusting for light flickering, matching tv-specs and all that stuff. But on RED even there is more freedom, as you can always dial in specific shutterspeed values.

So, to answer your question in short. I personally prefer to capture audio too and for that i'm trying to avoid varispeed. That's one reason to match capture and project framerates. Another one is, that i prefer to review the captured clips in original speed, not slow-mo, on camera.

 

[Samir Patel]

Thanks for the input. Ended up just shooting 59.94 with 23.98 time base. Really wish that Sigma 50-100/1.8 was out. Would have loved the extra stop and a third in low light.