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Hi Alan, I skimmed through that website but I am having a hard time finding what this method actually is or some sort of description of the tool. I either missed it or he wants you to buy his DVD. Perhaps you could give a little description or a link to where he describes his methods on the site?
To check my values I have a thin sheet of colored plastic (I prefer blue) that I view my painting and my reference at the same time with. It blocks out the colors and reduces it to values. When you view both the reference and the painting through it the problems pop out and you immediately see whether something on your canvas has too much contrast or not enough. I don't use it constantly, just once in a while to check up on how I did with the values. I am assuming this in not an uncommon practice but perhaps it is new to someone on this forum. The colored plastic I have is getting really scratched. I have tried to buy colored glass before through stained glass stores online but it ends up having a wave through it. If anyone also uses this method and has a link to a good source..please share!
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