does ND filter alter effects of yellow filter?

Voyager

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I'd been using a yellow filter for some B&W landscapes which involved a fairly bright sky with nice clouds, and a more subdued foreground. Heading home, it occurred to me that I should have mounted my 1/2 ND over the yellow filter to better expose for the shadow without blowing out the sky, but then I wondered whether the neutral density half of the filter would have affected the sky/cloud effects of the yellow filter. Thoughts?
 

David A. Goldfarb

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You can use a yellow filter and ND grad (I assume you mean a grad) at the same time. The effect will be different, because the exposure range is different, but the yellow filter still acts in the same way.

Another trick is to use a tobacco grad with B&W. It will increase contast in the sky without changing the foreground. Other color grads work this way too--totally cheesy for color, but interesting for B&W sometimes.
 

JBrunner

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The yellow filter predominately effects exposure of blue areas (like sky) although it has minor effect on each end because the transmission cut off isn't sharp. It has a heel and a toe for lack of a better explanation. The ND filter affects the over all exposure (no heel or toe as far as color goes, if its a good filter). If the filter factors are observed you can use them both, and the ND won't change the altered "contrast" of the sky/clouds (or other blue vs .whatever stuff) provided by a yellow or red filter, only the overall exposure.
 

Thomassauerwein

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If you really wanted to get picky, ND does have a slight cyan bias. Maybe .25c so, "yes" but negligible.
 

JBrunner

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If you want to get really really picky, the bias will increase with density.
 
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