Re: IR filters.....

["Des Crawley" <d.crawley@xxxxxxxxxx>]

I suggest stick with 25A initially until you have the other variables under
control and then move to the opaque which demand more from you..for
instance, you cannot see subject matter and thwere are real exposure
adjustments to make....

Des----------
> From: Hellaynea <Hellaynea@xxxxxxx>
> To: infrared@xxxxx
> Subject: Re: IR filters.....
> Date: Friday, 20 March 1998 16:31
> 
> 
> 
> Rolland:
> 
> Thanks for all of that great info!  I was wondering....I am about to go
ahead
> and buy the opaque filter for shooting infrared.........I know the opaque
is
> #87.......i found a chart that shows how much of the infrared light is
> transmitted.....87b= 940nm  37c=850nm......what is your experience with
these
> filters?  I am ordering the filters from B+H.....they advertise a filter
for
> infrared with the following numbers:  092,093,099,489.....do you know if
these
> are the same as the 87 series?  In the catalog I don't see
Tiffen....Heliopan
> or Hoya list them.....I know there is a hoyaR720......is this equal to an
> opaque87?   What about Cokin?  Should I even get one?  I bought an
infrared
> book by Laurie White and she says to just stick with a deep red!  Then
what's
> the point of the opaque filter?
> 
> Please!............any input would be greatly appreciated!!!
> 
> Astrid
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