60i or 30p

Tom Roper · March 22nd, 2010, 03:21 PM

Not arguing asthetics, 24p is a PITA for me. But there's a huge cadre of 24p supporters. Why else the hue and cry to Canon to add 24p to the 5DMkII dslr? I also hear it commonly stated, that if you want worldwide compatibility, 24p can be speeded up to 25p, or 25p slowed down to 24p all very easily. And either one with the appropriate 3:2 or 2:2 pulldown can work on 60/i or 50/i broadcast systems. But to convert 30p to 24p or 25p gives terrible results. So how do you make 30p play nice on the PAL systems?

Because otherwise, I think you are just stating a preference for the asthetic look of 30/p over 24/p which I would agree with, if that's all there was to the issue. But that said, 24p can look stellar on Blu-ray, as the other poster noted.

So my only concern with 30/p is if you use it, you've created a bastard child.

Anton Strauss · March 22nd, 2010, 05:30 PM

Quote:

Originally Posted by Doug Jensen

Anton, are you sure your camera doesn't have 1/50th? I find that very hard to believe. All the XDCAM cameras can shoot 1/50th in the PAL mode. What camera are you talking about?

Also, beyond that issue, you could never tell the difference between 1/50, ECS 49.8, and ECS 50.3. To the human eye, they would all look the same.

you may hit me over the head

I was checking all available shutter speeds when in interlaced mode and the lowest listed is 1/60 besides ECS

once switched to 25p, 1/50 magically appears

but I believe that in your case, progressive shooting will look better than in my case because you have extra 5 frames each second

also, 30p is not part of the DVD or Blu-ray spec, I wonder what is your delivery format

Les Jarrett · March 24th, 2010, 05:31 PM

OK folks, I've had a chance to do some testing. Since there were posters that were arguing for 24p, I decided to test shooting traffic in 24P, it being the more restrictive of the two.

I set up alongside a busy street during the evening rush. Speed limit 40 mph, so some cars were going slower, some faster.

I went through ECS settings and shutter speeds ranging from off to 1/125th.

The best results I obtained was at the lower settings, where cars would start to blur just past the center of the screen (this watching on a monitor).

At higher settings, the blur began to be replaced by judder.

As a control, I shot about a minute at 60i, 1/125th.

It looked nice and smooth, with cars blurring only as they approached the very corner of the screen.

I know that most everything I watch in HD on television is shot at 24p and looks lovely.

But for the life of me, anything I shoot that has much motion, shutter on, off, high, low, does not look good in 24P.

Is there anything more than setting the fool thing to 24P, turning on the shutter and adjusting it to the desired setting?

My distributor wants blu-rays in 24P. Right now, it seems to me it will look better to shoot in 60I, and try to go down the frightful road of standards conversion.

Thoughts? Thanks again. I enjoy hearing the different points of view!

March 22nd, 2010, 03:21 PM	#31
Tom Roper Trustee Join Date: Jun 2004 Location: Denver, Colorado Posts: 1,891	Not arguing asthetics, 24p is a PITA for me. But there's a huge cadre of 24p supporters. Why else the hue and cry to Canon to add 24p to the 5DMkII dslr? I also hear it commonly stated, that if you want worldwide compatibility, 24p can be speeded up to 25p, or 25p slowed down to 24p all very easily. And either one with the appropriate 3:2 or 2:2 pulldown can work on 60/i or 50/i broadcast systems. But to convert 30p to 24p or 25p gives terrible results. So how do you make 30p play nice on the PAL systems? Because otherwise, I think you are just stating a preference for the asthetic look of 30/p over 24/p which I would agree with, if that's all there was to the issue. But that said, 24p can look stellar on Blu-ray, as the other poster noted. So my only concern with 30/p is if you use it, you've created a bastard child.

March 24th, 2010, 05:31 PM	#33
Les Jarrett Regular Crew Join Date: Mar 2007 Location: Indianapolis, Indiana, USA Posts: 29	OK folks, I've had a chance to do some testing. Since there were posters that were arguing for 24p, I decided to test shooting traffic in 24P, it being the more restrictive of the two. I set up alongside a busy street during the evening rush. Speed limit 40 mph, so some cars were going slower, some faster. I went through ECS settings and shutter speeds ranging from off to 1/125th. The best results I obtained was at the lower settings, where cars would start to blur just past the center of the screen (this watching on a monitor). At higher settings, the blur began to be replaced by judder. As a control, I shot about a minute at 60i, 1/125th. It looked nice and smooth, with cars blurring only as they approached the very corner of the screen. I know that most everything I watch in HD on television is shot at 24p and looks lovely. But for the life of me, anything I shoot that has much motion, shutter on, off, high, low, does not look good in 24P. Is there anything more than setting the fool thing to 24P, turning on the shutter and adjusting it to the desired setting? My distributor wants blu-rays in 24P. Right now, it seems to me it will look better to shoot in 60I, and try to go down the frightful road of standards conversion. Thoughts? Thanks again. I enjoy hearing the different points of view!