Re: Wratten 87c filter

[Jaap Los <imagefotografie@xxxxxx>]

Hondo wrote:
> 
> I have been using a #25 red filter for my IR images with HIE. I have
> been using f11 at 1/125th of a sec exposure, and have gotten some great
> stuff. I want to get a more opaque filter, like the 87 or 87c. If I get
> one, what is a good place to start as far as f-stops and shutter speeds
> are concerned? I'm not sure if I'll have to expose longer with this type
> of a filter. I could use a little help here.....  thanks!
> 
> Also, if anyone has an extra of this type of filter they would like to
> get rid of, let me know! I'm having trouble finding one locally.
> 
> Brian
> 
Brian,
See my homepage where you can find all info about exposure with #87
filters. Address in the footer of this message
 
Greetings,
Jaap Los

See also my Infrared Photography Homepage specially made for you with
lots of information, infrared/lith pictures and links to other
interesting infrared-photography sites.
at:   http://home.wxs.nl/~losjb/hometest.html


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