Color changing/bleaching during shoot at DVinfo.net

Ken Lamug · June 16th, 2006, 01:03 AM

Hi, we were shooting with our dvx100b and for some reason the color fades to a darker tone then goes back to normal again, is there a setting here that i'm missing. It seems to be recording this also, it seems like the contrast adjusts on its own. I've been shooting on default P5 setting on the camera. We've white balanced etc... is this because of lighting or colors? i've noticed only in high contrast shots with very colorful backgrounds and clothing. When i shot in a better lit area i didn't even notice it but it "looks" like it still does it but not as much. Thanks for the help.

Joshua Provost · June 16th, 2006, 08:34 AM

This could be the auto-exposure or auto-focus adjusting as you shoot. Are you using the auto modes, or manual?

Ken Lamug · June 16th, 2006, 09:17 AM

we've tried both. setting everything to manual and it kept doing the same thing.

Peter Jefferson · June 18th, 2006, 08:09 AM

shoudlnt be the focus..

what are u shooting..??

ive never had an issue with exposure EXCEPT with the wacky iris hammering itself from one extreme to another when in manual mode.. this is rare, but it hapens every 20hrs or so... i cant replicate the problem so i cant convince thm that it needs servicing...

Cole McDonald · June 18th, 2006, 11:13 AM

Do you have some sample footage you could post up here for us to look at and help determine the cause?

Hugh DiMauro · June 20th, 2006, 08:39 AM

Make sure your gain is also set to manual.

Ken Lamug · June 20th, 2006, 11:26 PM

here's a sample of the clip:
http://www.youtube.com/watch?v=HEfcTPRvasU
the issue is noticable in 4:30 mins of the video.

we're suspecting it has something to do with the lights... maybe the flourescent lighting affecting the camera? we used all indoor lighting. the contrast is cycling from light to dark. when we turned on more lights in the room (lamp)... it didnt do it as fast... when we shot in natural sunlight coming into the room, it looked fine. unfortunately we didnt have enough time to figure out the issue so we had to make do with it. :-/

we used all the same settings throughout the entire shoot and even set everything to manual just to be safe. didnt work either. thanks

Ash Greyson · June 21st, 2006, 12:18 AM

Your culprit is auto white balance... the color temperature is bouncing around, there must have been some natural light or some competing light sources. Auto WB is the DEVIL! You are better to have a poor WB than a pulsating Auto WB which is MUCH harder to fix.... lesson learned... you CAN fix it but you will have to do some key frame color correction stuff which is a PITA!

ash =o)

Ken Lamug · June 21st, 2006, 12:26 AM

we'll check that. i know we tried turning everything to manual... oh well, it was really screwing us up. tried to white balance so many times but it kept doing it. thanks.

Ash Greyson · June 21st, 2006, 12:29 AM

Dont beat yourself up... when people ask me how I got so good at what I do, I always reply... "I just screwed up so much, I learned how to avoid every possible mistake!"

ash =o)

Tom Hardwick · June 21st, 2006, 12:36 AM

Good line Ash. We all of us only get good at what we do, and it's one of the (very few) reasons to applaud getting old(er). I've lived so long I've actually got the hang of camcorders at last.

tom.

June 16th, 2006, 01:03 AM	#1
Ken Lamug Regular Crew Join Date: Dec 2005 Posts: 45	Color changing/bleaching during shoot Hi, we were shooting with our dvx100b and for some reason the color fades to a darker tone then goes back to normal again, is there a setting here that i'm missing. It seems to be recording this also, it seems like the contrast adjusts on its own. I've been shooting on default P5 setting on the camera. We've white balanced etc... is this because of lighting or colors? i've noticed only in high contrast shots with very colorful backgrounds and clothing. When i shot in a better lit area i didn't even notice it but it "looks" like it still does it but not as much. Thanks for the help.

June 16th, 2006, 08:34 AM	#2
Joshua Provost Major Player Join Date: Sep 2004 Location: Phoenix, AZ Posts: 493	This could be the auto-exposure or auto-focus adjusting as you shoot. Are you using the auto modes, or manual? __________________ Owner/Operator, 727 Records Co-Founder, Matter of Chance Productions Blogger, Try Avoidance

June 18th, 2006, 11:13 AM	#5
Cole McDonald Trustee Join Date: Nov 2005 Location: Sauk Rapids, MN, USA Posts: 1,675	Do you have some sample footage you could post up here for us to look at and help determine the cause? __________________ Web Youtube Facebook

June 20th, 2006, 08:39 AM	#6
Hugh DiMauro Trustee Join Date: Jun 2003 Location: Central Florida Posts: 1,205	Make sure your gain is also set to manual. __________________ Interesting, if true. And interesting anyway.

June 16th, 2006, 09:17 AM	#3
Ken Lamug Regular Crew Join Date: Dec 2005 Posts: 45	we've tried both. setting everything to manual and it kept doing the same thing.

June 18th, 2006, 08:09 AM	#4
Peter Jefferson Inner Circle Join Date: Apr 2003 Location: Aus Posts: 3,884	shoudlnt be the focus.. what are u shooting..?? ive never had an issue with exposure EXCEPT with the wacky iris hammering itself from one extreme to another when in manual mode.. this is rare, but it hapens every 20hrs or so... i cant replicate the problem so i cant convince thm that it needs servicing...

June 20th, 2006, 11:26 PM	#7
Ken Lamug Regular Crew Join Date: Dec 2005 Posts: 45	here's a sample of the clip: http://www.youtube.com/watch?v=HEfcTPRvasU the issue is noticable in 4:30 mins of the video. we're suspecting it has something to do with the lights... maybe the flourescent lighting affecting the camera? we used all indoor lighting. the contrast is cycling from light to dark. when we turned on more lights in the room (lamp)... it didnt do it as fast... when we shot in natural sunlight coming into the room, it looked fine. unfortunately we didnt have enough time to figure out the issue so we had to make do with it. :-/ we used all the same settings throughout the entire shoot and even set everything to manual just to be safe. didnt work either. thanks

June 21st, 2006, 12:18 AM	#8
Ash Greyson Trustee Join Date: May 2003 Location: Tulsa, OK Posts: 1,689	Your culprit is auto white balance... the color temperature is bouncing around, there must have been some natural light or some competing light sources. Auto WB is the DEVIL! You are better to have a poor WB than a pulsating Auto WB which is MUCH harder to fix.... lesson learned... you CAN fix it but you will have to do some key frame color correction stuff which is a PITA! ash =o)

June 21st, 2006, 12:26 AM	#9
Ken Lamug Regular Crew Join Date: Dec 2005 Posts: 45	we'll check that. i know we tried turning everything to manual... oh well, it was really screwing us up. tried to white balance so many times but it kept doing it. thanks.

June 21st, 2006, 12:29 AM	#10
Ash Greyson Trustee Join Date: May 2003 Location: Tulsa, OK Posts: 1,689	Dont beat yourself up... when people ask me how I got so good at what I do, I always reply... "I just screwed up so much, I learned how to avoid every possible mistake!" ash =o)

June 21st, 2006, 12:36 AM	#11
Tom Hardwick Inner Circle Join Date: Mar 2003 Location: Billericay, England UK Posts: 4,711	Good line Ash. We all of us only get good at what we do, and it's one of the (very few) reasons to applaud getting old(er). I've lived so long I've actually got the hang of camcorders at last. tom.