IR contamination and Edius

[tony]

Apparently the Sony EX1 and EX3 has an IR contamination problem, were the colour black doesn't always turn out black, its turns out brownish instead.

I was wondering if any EX1/3 owners have used Edius to correct the problem using the colour correction.

Thanks.

[mattie]

i have had limited success - using the WB control panel u can desaturate any IR contaminated blacks within reason

[PaulTV]

Hi Tony,

It's not really fixable in any colour correction application as it appears more critical on substances such as man made fibres, meaning that everything is correct except say a sweatshirt.

I use a 486 filter on my EX1, which according to some, produces green vignetting, which I have to say after a year of use, I'm not worried about, also who will know what colour sweater a particular person is wearing? if it is slightly brown instead of black - its tricky to fix, but on most occasions not too much of a problem.

Maybe if you shoot with say 2 EX1's and a Z1, producing different colour responses to the same image, then you really have a tricky problem.

There's loads on DVinfo on this subject.

Paul

[Khoi Pham]

Don't know why all of you are saying this but I found that it is so easy to correct black with Edius using White Balance filter, if it is brown, subtract red.

[PaulTV]

Aah but its only some things that show up the contamination, its not a general colour change which I agree is easy, but specific items in a shot.

check these images:

http://provideocoalition.com/index.php/awilt/story/schneider_ir_filter_tests/P1/

Paul

[tony]

Thanks all for the reply

I use a 486 filter on my EX1, which according to some, produces green vignetting, which I have to say after a year of use, I'm not worried about, also who will know what colour sweater a particular person is wearing? if it is slightly brown instead of black....

Paul, I was told to get this filter too and according to what I read, it does a good job. It then apparently creates a green vignetting around the edges when fully zoomed out.. but you have used it long enough now and it doesn't seam to cause much of a problem.

I do wedding videos and grooms wear black and it was this that I originally was concerned about.
I waswondering if Edius could correct this somehow.

Thanks for the links, I see the filter really helps.

[mattie]

there is more indepth discussion on www.dvinfo.net under SONY EX forums

yr better off carrying this on there...

[tony]

Hi thanks mattie, yes, thats were I first saw it but its here I posted the question as to help fix it through Edius and colour correction.