25p vs 50i (PAL) at DVinfo.net

Brendan Pyatt · August 26th, 2008, 02:05 PM

Hi,

I am coming from a V1E where I always shot 50i and then converted to progessive in my NLE.

I am now thinking about shooting 25p on my Z7E. I shoot action sports so will be using 100-250 shutter speeds.

Is this a good idea? I would like the best picture possible.

Steve Phillipps · August 26th, 2008, 02:55 PM

Be wary of using too high shutter speeds as the image starts to strobe and get flickery. General rule even for action is shutter speed double frame rate, so 1/50th at 25P.
Steve

Brendan Pyatt · August 26th, 2008, 03:44 PM

So 50i is more useful to me then.

I often shoot in bright sunny conditions... Maybe some additional ND filters would help..

John Knight · August 26th, 2008, 04:04 PM

Quote:

Originally Posted by Brendan Pyatt

So 50i is more useful to me then.

Nope. As said 1/50th at 25P for action sports.

Brendan Pyatt · August 26th, 2008, 04:17 PM

Sorry i should have been clearer in my response.

As I shoot in bright sunshine I am often forced into a high shutter speed. If I were to use more ND filters then I would be able to keep down the shutter speed to 1/50th allowing me to use 25p.

If i don't use additional ND filters shooting at 50i would allow me to use a shutter speed of 1/100th whereas 25p only allows 1/50th.

John Knight · August 26th, 2008, 05:41 PM

Yeah - remember doubling to 50i is just general rule... it would need testing on the specific subject. So I would experiment with 50/100/200/250/500 etc... with a mix of ND filters, edit all the way through to DVD and play on plasma/lcd to come up with a preferred look and make sure there are no bugbears.

That's the fun of playing with this new gear - often it's a matter of just trial and error. Good way to learn about the cameras capabilities though!

August 26th, 2008, 02:05 PM	#1
Brendan Pyatt Regular Crew Join Date: Sep 2005 Location: Southampton UK Posts: 157	25p vs 50i (PAL) Hi, I am coming from a V1E where I always shot 50i and then converted to progessive in my NLE. I am now thinking about shooting 25p on my Z7E. I shoot action sports so will be using 100-250 shutter speeds. Is this a good idea? I would like the best picture possible.

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August 26th, 2008, 02:55 PM	#2
Steve Phillipps Trustee Join Date: Apr 2006 Location: Wales Posts: 1,304	Be wary of using too high shutter speeds as the image starts to strobe and get flickery. General rule even for action is shutter speed double frame rate, so 1/50th at 25P. Steve

August 26th, 2008, 03:44 PM	#3
Brendan Pyatt Regular Crew Join Date: Sep 2005 Location: Southampton UK Posts: 157	So 50i is more useful to me then. I often shoot in bright sunny conditions... Maybe some additional ND filters would help..

August 26th, 2008, 04:17 PM	#5
Brendan Pyatt Regular Crew Join Date: Sep 2005 Location: Southampton UK Posts: 157	Sorry i should have been clearer in my response. As I shoot in bright sunshine I am often forced into a high shutter speed. If I were to use more ND filters then I would be able to keep down the shutter speed to 1/50th allowing me to use 25p. If i don't use additional ND filters shooting at 50i would allow me to use a shutter speed of 1/100th whereas 25p only allows 1/50th.

August 26th, 2008, 05:41 PM	#6
John Knight Major Player Join Date: May 2008 Location: Christchurch, New Zealand Posts: 215	Yeah - remember doubling to 50i is just general rule... it would need testing on the specific subject. So I would experiment with 50/100/200/250/500 etc... with a mix of ND filters, edit all the way through to DVD and play on plasma/lcd to come up with a preferred look and make sure there are no bugbears. That's the fun of playing with this new gear - often it's a matter of just trial and error. Good way to learn about the cameras capabilities though!