weird results from filming a blue LCD

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AmbientFilm
Posts: 4
Joined: April 14th, 2012, 6:03 pm

weird results from filming a blue LCD

Post by AmbientFilm » July 21st, 2013, 10:34 pm

Hello,

I had this problem a few years ago and I know it will come up again on my next shoot: I am making instructional videos about a coffee machine. The machine has a blue LCD which shows the time, info, type of coffee, etc.

Whenever there is a shot of the blue digital display it reads really horrible. The blue color is super unreal looking and the text in the screen is completely unreadable.

I am shooting with a Sony ex1r. Does anyone have any suggestions? I thought about shooting with a polarizer, or messing with the shutter speeds but I'm at a loss.

Thanks in advance!
alisterchapman
Site Admin
Posts: 426
Joined: February 1st, 2011, 7:43 pm

Re: weird results from filming a blue LCD

Post by alisterchapman » July 23rd, 2013, 8:51 pm

This is probably due to the use of a blue LED as the backlight source. Blue LED's emit light well into the ultra violet spectrum and this intense UV light causes problems for most cameras. As yet I don't know of any fix for this. It also occurs with blue and purple LED lights used for stage lighting.
jilly
Posts: 5
Joined: October 18th, 2012, 12:26 pm

Re: weird results from filming a blue LCD

Post by jilly » July 24th, 2013, 10:43 am

You could try cutting a piece of CTO Gel to fit over the display if it can be done neatly.
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