Originally Posted by
Donald
Seri
As Colin has written on here often, the less expensive filters (e.g. Cokin, which I also use) can impart a colour cast onto the image, just because the materials used are not up to the quality of such as Lee or, if you go to the very top of the tree, Singh-Ray.
As you know, the vast majority of my work is in B&W, but even so I always want to make sure I eliminate any colour casts so that I can get a good conversion. I do that by always using a WhiBal, white balance card.
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