Archived posting to the Leica Users Group, 2007/02/06
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hi George, I didn't see your original message as I was preoccupied with a family visit from Thursday through Sunday. I did respond to Adam with a link to Bjorn Rorslett's IR Photography site. It's very detailed. I use his pages as a reference on IR and UV. I went back to Feb 3rd (my birthday) and found your original message. I don't think I can answer all your questions but here's a try. For b&w IR film, I think the 89B filter is preferred for its ease of use and not for the results it produces. I think the 87 will give you better results. I believe the visible light that gets through the 89b gives less of an IR effect.(a little dull). I believe this is also true in digital IR photos as well. I don't have an 87C filter and probably never get one, for the reasons you mentioned and the high cost of that and the Hoya R1000. I'm sure the focus between 650nm and 1000nm would change slightly, but stopping down the lens should cover it. Regards, Len On Feb 6, 2007, at 10:07 AM, Lottermoser George wrote: > Thanks for seconding the motion Adam ;~) I thought my message may > have not gotten through. > > Regards, > George Lottermoser > george@imagist.com > > > > On Feb 5, 2007, at 6:38 PM, Adam Bridge wrote: > >> I am sure hoping someone who is practicing IR photography can >> respond? >> I'd also find the answer valuable. > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information