Filters...

Unlike Ilford's page explaining the use of colored filters with B&W film photography, Hoya's page actually gives photographic illustrations rather than just text.

Come to think of it, it's weird that Ilford's page doesn't include illustrations, since they're basically in the "illustrating things" business.

Anyway, this is triggered by the arrival of a Tiffen 77mm Red 25 filter here on my front porch.
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