Interviews in 24P? at DVinfo.net

Mohammad Farooqi · August 23rd, 2009, 06:51 PM

Hi everyone,

Just wondering what is the difference between shooting an interview in 60i vs. 24P. By this I mean, while shooting in 24P do you have to do anything different than you would do if you were shooting on 60i. The question includes sound and lighting as well.
Thanks

Roger Shealy · August 23rd, 2009, 07:41 PM

As you know you'll need to pan slowly in 24P to avoid the jitters. I've heard some say that one is more light efficient than the other, but I just ran a test on my A1 with the shutter set at 1/60 and both 24 and 60i both had almost identical light response. 24P does allow you to gather a little extra light if you shoot at 1/48 shutter, which should work well for most interviews. If you have a really sedate subject, you could even get away with 1/24 (as apposed to 1/30 with 60i) if there isn't a lot of hand waving and animated gestures.

If the lighting is decent and you pan slowly and this is a typical interview, I don't think you will be able to tell much difference between 24P and 60i. There just isn't that much going on in most interviews to separate them in my opinion. If you are shooting for internet transmission, you may want to consider 720-30P.

Tripp Woelfel · August 24th, 2009, 08:43 PM

If your search around here you will find that there's nothing to keep you from 24p interviews. There are no intrinsic bugbears that prevent you from capturing them that way.

The larger question is, will your project be 24p? If yes, get it on. If not, remember that you generally want to shoot in the same format as your delivered project. I didn't come up with that. A lot of people much smarter than I did.

Alex Humphrey · December 5th, 2009, 09:35 PM

Mohammad, does you camera do native 24p? If so your shutter speed should go to 1/48th instead of 1/60th, hence easier to light by about a stop. But 1/48th will be the CORRECT shutter speed.

I haven't shot interlaced in years and I even shoot my friends soccer games in 24p. Makes killer DVD and HD content for iTunes.

Mohammad Farooqi · December 8th, 2009, 09:50 PM

Hi,

I am shooting on a sony ex3, so I can shoot 24P straight on the camera or an external drive. My project is in 24P but I will be delivering in both 24P and 60i. 60i for television release and 24P for DVD release and private screenings. A lot of people have told me to shoot with a 180 degree shutter instead of a 1/48. Why is that?

Thanks

Jimmie Myers · December 14th, 2009, 11:00 AM

Mohammed, a 180 degree shutter is 1/48 when you're shooting at 24p. It is 1/120 when you are shooting 60p.

When people refer to shutters in degrees, they are referring to classic 35mm movie camera conventions. When we refer to shutter speed in fractions of seconds, that comes from the still photography world.

You can research it more yourself if you're interested, but to shoot 180 degree (which is typically the amount of exposure that will result in a natural feeling, "movie" look) you simply set your shutter speed to 1 / 2 X FPS. Hope that helps.

Mohammad Farooqi · December 16th, 2009, 01:34 PM

Thanks for the information. I will look into what you said.

August 23rd, 2009, 06:51 PM	#1
Mohammad Farooqi Regular Crew Join Date: Aug 2009 Location: Jamaica, NY Posts: 40	Interviews in 24P? Hi everyone, Just wondering what is the difference between shooting an interview in 60i vs. 24P. By this I mean, while shooting in 24P do you have to do anything different than you would do if you were shooting on 60i. The question includes sound and lighting as well. Thanks

August 23rd, 2009, 07:41 PM	#2
Roger Shealy Major Player Join Date: May 2007 Location: Fayetteville, GA Posts: 772	As you know you'll need to pan slowly in 24P to avoid the jitters. I've heard some say that one is more light efficient than the other, but I just ran a test on my A1 with the shutter set at 1/60 and both 24 and 60i both had almost identical light response. 24P does allow you to gather a little extra light if you shoot at 1/48 shutter, which should work well for most interviews. If you have a really sedate subject, you could even get away with 1/24 (as apposed to 1/30 with 60i) if there isn't a lot of hand waving and animated gestures. If the lighting is decent and you pan slowly and this is a typical interview, I don't think you will be able to tell much difference between 24P and 60i. There just isn't that much going on in most interviews to separate them in my opinion. If you are shooting for internet transmission, you may want to consider 720-30P. Last edited by Roger Shealy; August 24th, 2009 at 05:46 AM.

December 8th, 2009, 09:50 PM	#5
Mohammad Farooqi Regular Crew Join Date: Aug 2009 Location: Jamaica, NY Posts: 40	ex3 Hi, I am shooting on a sony ex3, so I can shoot 24P straight on the camera or an external drive. My project is in 24P but I will be delivering in both 24P and 60i. 60i for television release and 24P for DVD release and private screenings. A lot of people have told me to shoot with a 180 degree shutter instead of a 1/48. Why is that? Thanks

December 16th, 2009, 01:34 PM	#7
Mohammad Farooqi Regular Crew Join Date: Aug 2009 Location: Jamaica, NY Posts: 40	Thanks Thanks for the information. I will look into what you said.

August 24th, 2009, 08:43 PM	#3
Tripp Woelfel Trustee Join Date: Jan 2008 Location: North Conway, NH Posts: 1,745	If your search around here you will find that there's nothing to keep you from 24p interviews. There are no intrinsic bugbears that prevent you from capturing them that way. The larger question is, will your project be 24p? If yes, get it on. If not, remember that you generally want to shoot in the same format as your delivered project. I didn't come up with that. A lot of people much smarter than I did.

December 5th, 2009, 09:35 PM	#4
Alex Humphrey Major Player Join Date: Mar 2007 Location: california North and South Posts: 642	Mohammad, does you camera do native 24p? If so your shutter speed should go to 1/48th instead of 1/60th, hence easier to light by about a stop. But 1/48th will be the CORRECT shutter speed. I haven't shot interlaced in years and I even shoot my friends soccer games in 24p. Makes killer DVD and HD content for iTunes.

December 14th, 2009, 11:00 AM	#6
Jimmie Myers New Boot Join Date: Oct 2009 Location: Atlanta, GA Posts: 12	Mohammed, a 180 degree shutter is 1/48 when you're shooting at 24p. It is 1/120 when you are shooting 60p. When people refer to shutters in degrees, they are referring to classic 35mm movie camera conventions. When we refer to shutter speed in fractions of seconds, that comes from the still photography world. You can research it more yourself if you're interested, but to shoot 180 degree (which is typically the amount of exposure that will result in a natural feeling, "movie" look) you simply set your shutter speed to 1 / 2 X FPS. Hope that helps.