Strobing problem with EX3 at DVinfo.net

Nathan Apffel · February 26th, 2009, 02:30 PM

So I have been shooting with my EX3 for about a month, we were on location in Mexico shooting amazing surf footage off a jetski, both 1080/30P and 720/60@30 overcrank. Both looked amazing in the viewfinder, but when viewed both in XDcam TRansfer and in FCP some of the clips had vertical lines flickering in frame, they were transparent blue, hard too see until you sped the footage up. On some clips it is barely flickering, on other clips (like the reference below) it is extremely heavy. They would randomly come in and out, mostly at the beginning of the shot, then randomly just stop and the picture would be perfect again. Any ideas? I have never seen this before, but now that I look over some other footage I shot you can see the same problem in the out of focus background elements.Below is a link on Vimeo of one clip. It is pretty compressed but watch the flicker and how it stops.

My setting were: Shutter off, ND2, 5.6-8, framerates listed above.

http://vimeo.com/3383974

If anyone has any ideas or knows how I can avoid this please let me know. Thanks.

Nate Apffel
Corban Productions - Carlsbad, California

Matt San · February 26th, 2009, 03:12 PM

that video is marked private

Vincent Oliver · February 26th, 2009, 03:24 PM

I suppose it's because the video has "Blue" elements in it.

Nathan Apffel · February 26th, 2009, 03:28 PM

Sorry guys, I just unlocked the video. You should be able to view it now. Thanks!

Matt San · February 26th, 2009, 03:32 PM

looks very much like the dreaded AUTO FLICKER REDUCTION - best to keep this off

even with strip lights u dont need it nowadays - especially on fast shutter speeds.

u might beable to reduce it with a flicker reduction filter in yr NLE (if it has one)

February 26th, 2009, 02:30 PM	#1
Nathan Apffel New Boot Join Date: Sep 2006 Location: California Posts: 11	Strobing problem with EX3 So I have been shooting with my EX3 for about a month, we were on location in Mexico shooting amazing surf footage off a jetski, both 1080/30P and 720/60@30 overcrank. Both looked amazing in the viewfinder, but when viewed both in XDcam TRansfer and in FCP some of the clips had vertical lines flickering in frame, they were transparent blue, hard too see until you sped the footage up. On some clips it is barely flickering, on other clips (like the reference below) it is extremely heavy. They would randomly come in and out, mostly at the beginning of the shot, then randomly just stop and the picture would be perfect again. Any ideas? I have never seen this before, but now that I look over some other footage I shot you can see the same problem in the out of focus background elements.Below is a link on Vimeo of one clip. It is pretty compressed but watch the flicker and how it stops. My setting were: Shutter off, ND2, 5.6-8, framerates listed above. http://vimeo.com/3383974 If anyone has any ideas or knows how I can avoid this please let me know. Thanks. Nate Apffel Corban Productions - Carlsbad, California

February 26th, 2009, 03:24 PM	#3
Vincent Oliver Trustee Join Date: Sep 2004 Location: Chislehurst, London Posts: 1,724	I suppose it's because the video has "Blue" elements in it. __________________ Eyes are a deaf man’s ears. Ears are a blind man’s eyes

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February 26th, 2009, 03:12 PM	#2
Matt San Regular Crew Join Date: Jan 2009 Location: Wales UK Posts: 121	that video is marked private

February 26th, 2009, 03:28 PM	#4
Nathan Apffel New Boot Join Date: Sep 2006 Location: California Posts: 11	Sorry guys, I just unlocked the video. You should be able to view it now. Thanks!

February 26th, 2009, 03:32 PM	#5
Matt San Regular Crew Join Date: Jan 2009 Location: Wales UK Posts: 121	looks very much like the dreaded AUTO FLICKER REDUCTION - best to keep this off even with strip lights u dont need it nowadays - especially on fast shutter speeds. u might beable to reduce it with a flicker reduction filter in yr NLE (if it has one)