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-   -   24p please advise! (https://www.dvinfo.net/forum/general-hd-720-1080-acquisition/143529-24p-please-advise.html)

Aric Mannion February 11th, 2009 09:51 AM

24p please advise!
 
Do pans and "pulls" (like moving forward or back) look too jittery in 24p? If so is there a particular speed that is problematic -and would moving extremely fast or extremely slow have better results?
I have some experience with 24p, but I need to research any aesthetic concerns and benefits. I may have to use it for a particular project that has little room for error.

Andy Olson February 11th, 2009 10:41 AM

It depends on how fast you do them. Yes, they will look stuttery if you do them too fast. There are standards for speeds of pans for 24p in most cinematographers handbooks. You probably can find a list through google.

Best,
Andy

Aric Mannion February 11th, 2009 03:31 PM

Another thought came to mind: There are times where I need to lower the shutter speed to stylize with a natural motion blur effect. In my camera it's no problem, I can use 30 or 15, even 8.
Does the shutter speed work the same way in 24p, or are there potential problems I should be aware of? I hope to get enough practice to test all my concerns, but it if anyone wants to share their experience w/ 24p it would be a great heads up.

Tripp Woelfel February 11th, 2009 06:41 PM

Quote:

Originally Posted by Aric Mannion (Post 1010453)
Does the shutter speed work the same way in 24p, or are there potential problems I should be aware of?

Well, sorta. Remember that you're already shooting slower shutter speeds with 24p if you follow normal guidelines. By that I mean that normal for 60i is 1/60. That goes down to 1/48 or 1/24 for 24p. Aside from that, there shouldn't be much difference.

Aric Mannion February 17th, 2009 10:10 AM

I hear there is some chart for panning speeds in 24p, and I assume other frame rates as well. I guess it's the ASC handbook or something? I just can't find this thing though, so if any one has a link please post it. Thanks.

Alex Humphrey February 17th, 2009 06:27 PM

There is a chart, but here is the answer. Crossing from 1 side of frame to the other should take a minimum of 5 seconds. No idea if that was referring to the old 4:3 film aspect ratio or a 1:85. But basically shoot 1/48th and keep zooms/pans a little slower than you might with 60i video or a little faster (whip pans). Other suggestions.

1. Really pan with a subject matter... ok any speed.
2. Keeping the aperture near wide open and lens at near longest telephoto range with the subject close to the camera and the background far away and now out of focus, then any panning jitters will go away.

It's really not complicated at all. Just have too pan a little slower or with a subject or do more cut aways. I shoot my friend's soccer games in 24p at 1/60th (nicer slow motion replays than 1/48th but you should REALLY be at 1/48th) and as long as I pan with the ball or action, then no one notices the blurry stands moving kind of choppy.

Aric Mannion February 18th, 2009 09:57 AM

Great, I hoped that panning with a subject wouldn't be a big problem. And super quick pans sound ok, if I'm understanding you.

Jacques E. Bouchard February 21st, 2009 10:24 AM

Quote:

Originally Posted by Aric Mannion (Post 1010241)
Do pans and "pulls" (like moving forward or back) look too jittery in 24p? If so is there a particular speed that is problematic -and would moving extremely fast or extremely slow have better results?
I have some experience with 24p, but I need to research any aesthetic concerns and benefits. I may have to use it for a particular project that has little room for error.

You get jerky motion mostly when you playback 24p at 29.976 fps. you can greatly reduce judder by using 2:3:3:2 pulldown instead of 2:3:2:3.


J.

Ramji Meena February 21st, 2009 11:20 PM

24P or 59.54i
 
I am shooting a one hour long documentary film. I want this to be telecasted on various channels (Discovery 1920*1080 59.94i).I had also planned a feature film on the same subject and therefore shot some on 24p. The feature film project could not took off but the documentary can be completed.
The already shot footage is on --
HDW F750 1080i/59.94
HDC F950R 1080/24p
DVCPRO HD varricam 720/24p
DVCPRO HD HDX900 720/24p
HDV HVX202
75 % shoot remains for an hour long documentary. In future I would like to shoot on HDX900 DVCPRO HD (principle camera) and PMW EX3 (B Camera)
1.Does 24p acceptable to the channel and other broadcasters ?
2. What frame rate should be adopted for the remaining shoot?
3. What editing path I must follow to get the best resolution, please guide.
4. How can I convert the above footage in acceptable resolution or should I re-shoot?
Please advise

Ramji Meena February 23rd, 2009 04:24 AM

Quote:

Originally Posted by Ramji Meena (Post 1016095)
I am shooting a one hour long documentary film. I want this to be telecasted on various channels (Discovery 1920*1080 59.94i).I had also planned a feature film on the same subject and therefore shot some on 24p. The feature film project could not took off but the documentary can be completed.
The already shot footage is on --
HDW F750 1080i/59.94
HDC F950R 1080/24p
DVCPRO HD varricam 720/24p
DVCPRO HD HDX900 720/24p
HDV HVX202
75 % shoot remains for an hour long documentary. In future I would like to shoot on HDX900 DVCPRO HD (principle camera) and PMW EX3 (B Camera)
1.Does 24p acceptable to the channel and other broadcasters ?
2. What frame rate should be adopted for the remaining shoot?
3. What editing path I must follow to get the best resolution, please guide.
4. How can I convert the above footage in acceptable resolution or should I re-shoot?
Please advise

Forgive if my questions are silly .I am new and have very less funds available for consultations.Please comment


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