Shutter speed on EX3 Pal system at DVinfo.net

Barry Uddstrom · November 27th, 2009, 02:10 PM

Normally I have always only shoot in HQ 1080/25P with a Shutter speed of 1/50th

I have been asked to shoot in SP 1080i / 50i with shutter speed 1/50th

But I have noticed there is no 1/50 speed for 50i, not even in the hand book

Question for Doug, in your book you say to use 1/50 shutter speed with 50i, is this a error or are I setting or seeing something wrong (most likely are).

There only seems to be 1/60th shutter speed for SP 1080i

Guess it will not matter but just thought I would ask.

Thanks

Graeme Fullick · November 27th, 2009, 03:39 PM

Barry,

Some may correct me on this, but I am pretty sure that switching the shutter off will get you the 1/50th that you need if you are set to 1080i.

All the best,

Graeme

Barry Uddstrom · November 28th, 2009, 07:09 PM

Graeme thanks for your advise.

I ended up leaving the shutter switched on with 1/60 shutter speed.

Have done the job and it worked out ok.

With being such a small difference between the two shutter speeds I didn't think it would be a problem and I would rather know what the shutter was doing than let it decide.

Thanks again.

Barry

Richard Hunter · November 28th, 2009, 07:53 PM

Hi Barry. If 1/60s works for you that's great, but just be aware that you might see some flickering if you shoot 1/60s under artificial light. Best to switch off the shutter when shooting 50i.

Richard

Paul Inglis · December 2nd, 2009, 11:33 AM

I don’t tend to shoot interlaced but if I did I think setting an angle of 180 degrees would be better than 1/60.

Steve Phillipps · December 2nd, 2009, 11:44 AM

Probably not wise Paul, best just to leave the shutter off as we always did in Digibeta days - you shouldn't need it as there should be no blurring as it's 50 frames per second. A faster shutter risks giving you strobing - crank it up to 1/2000 to see an exagerated version of the effect.
Steve

Paul Inglis · December 2nd, 2009, 12:17 PM

You got a point Steve.

November 27th, 2009, 02:10 PM	#1
Barry Uddstrom Regular Crew Join Date: Apr 2002 Location: New Zealand Greymouth Posts: 39	Shutter speed on EX3 Pal system Normally I have always only shoot in HQ 1080/25P with a Shutter speed of 1/50th I have been asked to shoot in SP 1080i / 50i with shutter speed 1/50th But I have noticed there is no 1/50 speed for 50i, not even in the hand book Question for Doug, in your book you say to use 1/50 shutter speed with 50i, is this a error or are I setting or seeing something wrong (most likely are). There only seems to be 1/60th shutter speed for SP 1080i Guess it will not matter but just thought I would ask. Thanks

November 27th, 2009, 03:39 PM	#2
Graeme Fullick Major Player Join Date: Mar 2005 Location: Newcastle, Australia Posts: 337	Barry, Some may correct me on this, but I am pretty sure that switching the shutter off will get you the 1/50th that you need if you are set to 1080i. All the best, Graeme __________________ Graeme

November 28th, 2009, 07:09 PM	#3
Barry Uddstrom Regular Crew Join Date: Apr 2002 Location: New Zealand Greymouth Posts: 39	Graeme thanks for your advise. I ended up leaving the shutter switched on with 1/60 shutter speed. Have done the job and it worked out ok. With being such a small difference between the two shutter speeds I didn't think it would be a problem and I would rather know what the shutter was doing than let it decide. Thanks again. Barry

November 28th, 2009, 07:53 PM	#4
Richard Hunter Trustee Join Date: Dec 2004 Location: Lipa City Batangas, Philippines Posts: 1,110	Hi Barry. If 1/60s works for you that's great, but just be aware that you might see some flickering if you shoot 1/60s under artificial light. Best to switch off the shutter when shooting 50i. Richard

December 2nd, 2009, 11:33 AM	#5
Paul Inglis Major Player Join Date: Dec 2008 Location: British Isles Posts: 415	I don’t tend to shoot interlaced but if I did I think setting an angle of 180 degrees would be better than 1/60.

December 2nd, 2009, 11:44 AM	#6
Steve Phillipps Inner Circle Join Date: Apr 2006 Location: Wales Posts: 2,130	Probably not wise Paul, best just to leave the shutter off as we always did in Digibeta days - you shouldn't need it as there should be no blurring as it's 50 frames per second. A faster shutter risks giving you strobing - crank it up to 1/2000 to see an exagerated version of the effect. Steve

December 2nd, 2009, 12:17 PM	#7
Paul Inglis Major Player Join Date: Dec 2008 Location: British Isles Posts: 415	You got a point Steve.