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Re: [ATM] Wratten #3N5 filter responses
Dominic-Luc Webb wrote:
> It is known that the 3N5 is used in B&W photography. It is in
> fact one of the more popular filters for B&W.
>
>
The neutral density part makes it much more limited for astronomy
though. In B&W photography yellow is used in landscapes and helps
darken the sky some. Not as important with some of todays emulsions.
Ken Lowther
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