Paul ... I have an uncounted number of filters in all flavors ... when I compare I try to compare like with like. I believe the SMC filters are superior to Heliopan and B+W. Light transmission seems to be better, reflections less, build quality about equal, and cost less. But Pentax makes a limited number of sizes and colors, so Heliopan and B+W are used here as well. The truth is that the thinner Heliopans might be considered a "better" filter if thin is an important requirement. B+W might be considered the better filter if a wide variety of colors is important (they have three or four yellows, for example, a similar number of reds), and certainly B+W and Heliopan are better if you need a filter in a diameter that Pentax doesn't make.
Here's a caveat about Heliopan, from my experience, YMMV: some Pentax lens hoods do not screw into the thinner filter securely. In that situation perhaps a B+W or SMC Pentax would be better. Oddly enough, some hoods work fine with the thinner Heliopan. Go figure <shrug>. "Paul F. Stregevsky" wrote: > > Shel, > Didn't you make your comparison with a single-coated Heliopan? -- Shel Belinkoff mailto:[EMAIL PROTECTED] http://home.earthlink.net/~belinkoff/ http://home.earthlink.net/~belinkoff/darkroom-rentals/index.html - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
