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View Full Version : 25p is now available. What about 24p?



PhilD
06-24-2009, 01:03 PM
With the new firmware we can film at 1/25 (the minimum was 1/30 before) but it's only in /5 increments so it's now possible to shoot 20 frames per second, 25 or thirty. It works down to 1/2 of a sec but that looks crappy unless you film a waterfall with a tripod. Anybody knows if it's possible to have any number as increments?

Yes the video is recorded as 1/60 (60p) so there are duplicate frames but I don't think it's a big deal if you edit it as 60p, you still get the film look, I tried the new firmware and with my 1/25 it looks like film! Hope I will be able to unluck 1/24.

If it's not possible, well 1/25 is still much better than 1/30 for night scenes.

DanDOF
06-24-2009, 01:32 PM
maybe i am not reading your post closely enough, but i think you are mistaken to think shutter speed adjusts frame rate. Yes, shutter speed will affect the visual texture of each frame, but not how many frames you shoot per second.

PhilD
06-24-2009, 02:55 PM
Umm OK maybe the new "film look" I saw using 1/25 was just an hallucination! Ha

Barry_Green
06-24-2009, 04:16 PM
Actually, the shutter speed does affect the frame rate, if (and only if) the shutter speed is slower than the recorded frame rate. If the shutter needs to be held open longer than the nominal frame rate, the system will buffer up and duplicate frames. So shooting 720/60p at 1/30 shutter results in 720/30p footage being recorded.

I don't know what would happen with 720/60p footage at 1/25, I would presume you'll have some manner of pulldown recorded that could be stripped out with something like Neo Scene, but if it's truly imaging at 1/25 shutter, yes you'd be getting 25fps. Problem is that the frames will have too much motion blur to look truly filmlike. I think experimenting with 1/50 would be warranted; shooting 1/50 and throwing away every other frame should result in a reasonably good 720/25p.

PhilD
06-24-2009, 05:19 PM
Problem is that the frames will have too much motion blur to look truly filmlike. I think experimenting with 1/50 would be warranted; shooting 1/50 and throwing away every other frame should result in a reasonably good 720/25p.

Thanks you're right, even though it looked good at 1/25 there was more motion blur when panning