Cumulative Exposure Effect at DVinfo.net

Jim Nicholls · October 26th, 2010, 01:27 AM

Hi everyone,

I have has a request to use an existing video and average the contents of preceding frames into the current frame to give a long exposure effect. I am not sure how many frames back we need to go so it would be great if this was variable. It sounds like a fairly achieable effect and I suspect there is something available in AE already to do it but I can't find it.

Any Hints?

Thanks

Jim

Gregory Gesch · October 26th, 2010, 07:21 PM

Hi Jim. Have a look at the Echo effect (or Time Displacement might interest you as well).

Shawn McCalip · October 30th, 2010, 09:45 PM

Another possibility is to duplicate your layer several times, offset each layer by a single frame, and then set the transparency mode on each layer to Screen or Add. For a less intense effect, use less layers or turn off existing layers until you reach the desired look.

October 26th, 2010, 01:27 AM	#1
Jim Nicholls Regular Crew Join Date: Sep 2002 Posts: 27	Cumulative Exposure Effect Hi everyone, I have has a request to use an existing video and average the contents of preceding frames into the current frame to give a long exposure effect. I am not sure how many frames back we need to go so it would be great if this was variable. It sounds like a fairly achieable effect and I suspect there is something available in AE already to do it but I can't find it. Any Hints? Thanks Jim

October 30th, 2010, 09:45 PM	#3
Shawn McCalip Major Player Join Date: Apr 2007 Location: Anchorage, AK Posts: 315	Another possibility is to duplicate your layer several times, offset each layer by a single frame, and then set the transparency mode on each layer to Screen or Add. For a less intense effect, use less layers or turn off existing layers until you reach the desired look. __________________ Past projects, recent projects, and more! http://www.youtube.com/user/chugach3dguy

October 26th, 2010, 07:21 PM	#2
Gregory Gesch Regular Crew Join Date: Jun 2009 Location: Brisbane Australia Posts: 114	Hi Jim. Have a look at the Echo effect (or Time Displacement might interest you as well).