Re: InfraRed Filters

[Joseph Tainter]

I love IR photography, and will have to get into this. It sounds 
like the Hoya filter is the way to go.

At B&H the Hoya RM 72 costs as follows:
67 mm: $ 80.95
77 mm: $283.50

Hard to figure why the 77 would be so much more. A 77 would be 
logical for me. It would fit my DA 14, and with step-up rings, 
every other lens. It would also fit the forthcoming DA 16-50 
F2.8, which I would guess will have a 77 mm. filter thread. But, 
oh, the price!

Joe