GH3 Shutter Speeds! at DVinfo.net

Chris Gillooly · February 28th, 2014, 08:40 AM

I have read on various forums when shooting 50P you should set the shutter to 1/125th and I have never been able to comprehend why although the pictures do look right until...

So I set the shutter to 1/50th and shoot 25P all looks good I then shoot 50P and it doesn't on playback so I assume and I have read that you need to shoot at 1/125th and it looks right on the camera but on transferring to the AVID I transcode to DNXHD for a 1080i project and the footage now looks over shuttered, so shooting at 1/50th looks right once the files have been transcoded, this is really strange but I can't work out why this would be.

I assume the same is for 30P and 60P but it would be interesting to have this confirmed.

Fran Guidry · February 28th, 2014, 01:33 PM

It's my understanding that the shutter should be 180 degrees to the playback frame rate. If I shoot 60p I playback at 30 fps basically dropping alternate frames so I use a 1/60 shutter. If the 60p is to be used for slomo and conformed to 30 fps then shoot 1/120.

Fran

February 28th, 2014, 08:40 AM	#1
Chris Gillooly New Boot Join Date: Feb 2014 Location: England Posts: 9	GH3 Shutter Speeds! I have read on various forums when shooting 50P you should set the shutter to 1/125th and I have never been able to comprehend why although the pictures do look right until... So I set the shutter to 1/50th and shoot 25P all looks good I then shoot 50P and it doesn't on playback so I assume and I have read that you need to shoot at 1/125th and it looks right on the camera but on transferring to the AVID I transcode to DNXHD for a 1080i project and the footage now looks over shuttered, so shooting at 1/50th looks right once the files have been transcoded, this is really strange but I can't work out why this would be. I assume the same is for 30P and 60P but it would be interesting to have this confirmed. __________________ www.tvv.co.uk

February 28th, 2014, 01:33 PM	#2
Fran Guidry Regular Crew Join Date: Mar 2011 Location: Walnut Creek, CA, USA Posts: 69	Re: GH3 Shutter Speeds! It's my understanding that the shutter should be 180 degrees to the playback frame rate. If I shoot 60p I playback at 30 fps basically dropping alternate frames so I use a 1/60 shutter. If the 60p is to be used for slomo and conformed to 30 fps then shoot 1/120. Fran __________________ Slack Key Guitar in California - www.kaleponi.com Homebrewed Music Blog Last edited by Fran Guidry; February 28th, 2014 at 03:19 PM.