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White Balance
Topic Rating: 5 Topic Rating: 5 Topic Rating: 5 Topic Rating: 5 Topic Rating: 5 Topic Rating: 5 (1 votes) 
March 12, 2014
10:24 am
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Hi, I m just a beginner, I would like to know why do we require a grey card for white balance

I mean how does a Lightroom thinks for making that decision,  why cant we just select a grey or white from the software itself.

March 13, 2014
10:19 am
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18% grey is neutral color, the Lightroom knows. When you tell the software with a color picker, which you put on your grey card, that this is grey, it knows how to adjust all other color based on that information. Software can not find 18% grey itself, because if your balance is off, 18% grey would not appear as 18% grey on the picture. So you need to show it where it is. 

 

March 13, 2014
10:58 am
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Ok… by show of hands, how many people use a grey card?

Me… No

-- Mandrake --

March 13, 2014
11:08 am
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I use color checker passport with grey card sometimes but not always. It can be very useful in mixed lightening condition. 
One of the scenarios where I would use it for sure is product photography, since you want colors to be as accurate as possible. 

March 13, 2014
11:03 pm
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Thanks Mam, that was a great addition to my knowledgeCool

March 14, 2014
5:29 am
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I’ve not used one, but that certainly doesn’t mean that I shouldn’t be using one :-)

 

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