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Title: It works but it is a pain to use
Review: Well the product does work as advertised. It gives you very accurate custom white balance readings. The problem is that you have to shoot the sample image back into the light source, which is not always possible to do unless you are in a studio or controlled location shoot. For scenics it is not very practical. I used it a few times but it mostly sits in my bag now. It's too much money for something that you don't use because it is a hassle. I am open to suggestions from other users if I am making it unecessarily complex or am misunderstanding how it is supposed to be used.
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