Re: Neutral Density Filters

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

On  1 Jul 98 at 23:13, Bill D. Casselberry wrote:

> 
> 
>   Hi WJ
> 
> 	this is confusing -- do you mean that a ND will or won't
> 	do any good combined w/ a red filter for IR  ??

Mmm....they will only do good as an increased red filter....ie slow 
the film down a bit (1-2 stops), but only have effect in the visible 
spectrum, and increase the IR-effects.

If you use an already opaque IR filter, they would not make any
difference on IR, neither normal ND nor ND-grad.



 

- -- 
Bye,

Willem-Jan Markerink


      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]
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