Hmm I have the B+W #92, it's a 650 cutoff but says passes 50% from 650-700 and 90% from 730-2000
The next step up is a #93 but it starts at 1% at 800 so 800 is beyond the Rollei as far as I understand?
Did I get the wrong version? I know people use the R72 but I don't like the Hoya filters and thought the B+W 92 was the same filter?
Sent w/ iPhone using Tapatalk