EX3 captured colour inaccurate

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Myfrenchlingo
Posts: 2
Joined: August 11th, 2013, 6:25 pm

EX3 captured colour inaccurate

Post by Myfrenchlingo » August 12th, 2013, 6:47 pm

During post production of a recently filmed dance show we noticed that some of the numbers had inaccurately captured colour.
The two set of stills show two numbers close up and wide shot. The blue seen in both cases should have been a medium pink. Can anybody offer an explanation why this has happened?
Also what about the dirty shadows below the dancers feet?

The two EX3s were both set to 3200K white balance and + 3 db gain.
Shutter 1/100 sec
Format 1920 x 1080 25 fps (50i)
The lenses had the Tiffin IR cut filters.
The picture profile used for both cameras was.
Matrix turned on and set for HIGH SAT.
Detail level -10.
Cine4 gamma setting.
Master Black level -3
Black Gamma -2.
.
As originally suggested by Doug Jensen and used for the last four years .

We talked to the lighting man and he tells us a new Italian LED light was used for the back screen.

Clay Paky - A.leda Wash K10

The blue on the floor is we presume a reflection from the back screen. The floor is a polished wood stage.

Do LED lights give this sort of problem with the EX3 and similar CMOS sensor video cameras?

Any help greatly appreciated.
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alisterchapman
Site Admin
Posts: 426
Joined: February 1st, 2011, 7:43 pm

Re: EX3 captured colour inaccurate

Post by alisterchapman » August 14th, 2013, 11:43 pm

Led lights cause havoc with most cameras as they do not output a complete color spectrum. Blue LEDs are particularly problematic as they usually output a lot of far blue and ultraviolet.
Myfrenchlingo
Posts: 2
Joined: August 11th, 2013, 6:25 pm

Re: EX3 captured colour inaccurate

Post by Myfrenchlingo » August 19th, 2013, 11:08 am

Thanks Alistair.
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