> I had a question that none of my friends could answer exactly > (we all had our guesses :D). > What happens if you stack for example 2 ND8 filters? Will it > be ND16 or > ND64 equivalent? > > So I decided to order 2 more ND8 filters from EBay and done a > test. But during the tests I found out that ND filters are > not that Neutral Density as they should be... > More at my photoblog: http://15kb.blogspot.com/2010/02/nd-anomaly.html >
That's probably because the ones you used are cheap crap. You'd get better results, and more accurate density measures, using brands like Lee, B+W and Heliopan, or the pro versions of Cokin and Hoya. Bob -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
