Re: IR filters.....

["David M. Young" <dyoung@xxxxxxxxxxx>]

Excuse me for butting in...   I went with the B+W 092 filter, and according
to B+W (really Schneider Optics) it's equivalent to a Wratten 89b.  It's
not completely opaque, but it's a deep enough red that you won't really be
able to focus and meter through it.  I'm *really* happy with the results I
got by starting with the recommendations on the Schneider web page about
starting exposure info and bracketing.  The lab where I had my film
processed has a couple of guys who shoot HIE semi-professionally... both
were so impressed with the results that they took all the info down about
my filter and are going to try it out for themselves. 

Good luck!
D.


At 12:31 AM 3/20/98 EST, you wrote:
>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


*
****
*******
******************************************************
*  To remove yourself from this list, send:          *
*         UNSUBSCRIBE INFRARED                       *
*       to                                           *
*         MAJORDOMO@xxxxx                            *
*----------------------------------------------------*
*   For the IR-FAQ, IR-Gallery and heaps of links:   *
*  http://www.a1.nl/phomepag/markerink/mainpage.htm  *
******************************************************

------------------------------