Re: HIE & filtering.

[Clive Warren <Clive.Warren@xxxxxxxxxxxxxx>]

At 11:41 am -0600 19/1/01, Daniel Flather wrote:
>
>
>This might be a simple question but I will post it anyway.
>
>After cruising B&H in the filter section I was wondering, when using HIE
>I use a #29 red filter (B+W) or a 87c gel BTFR.  How much of a
>difference is there between the filter I use(#29) and a #89b red?
>
>-Daniel Flather
>Canada.


Hello Daniel,

I posted a reply to your message five days ago but so far it hasn't 
made it to the list!

There will be a noticeable difference between the #29 and the #89B 
although not as marked as the difference between a #29 and an 87C. 
The film speed will be slower and the negs will have more grain 
together with higher contrast.

The 89B will give you more of the "wood" effect.  The 89B is in fact 
one of my favourite filters to use with any infrared film. It is a 
happy compromise between film speed and infrared "wood" effect which 
still leaves negatives which are relatively easy to print.

The spectral curves and more information are in the Infrared FAQ at:

http://www.infraredfaq.org

-- 
All the best,

              Clive   http://www.cocam.co.uk
                      Photographic Services, Filters and Equipment, Infrared FAQ
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