If the elements are bonded they shouldn't act as a surface. On 13 September 2014 15:54, Bill <anotherdrunken...@gmail.com> wrote: > On 12/09/2014 8:11 PM, Igor PDML-StR wrote: >> >> >> How many surfaces does this lens have? >> http://42graphy.org/misc/Baikal/_IR29947.jpg >> >> (for those ready to cheat: it's Pentax 17-70/4 at f/22) >> >> I didn't expect to see so many reflections from all the surfaces. >> That's what I assume was the reason for all those spots. Right? >> >> Igor >> >> >> > > 17 elements in 12 groups. I consider that to still be 34 surfaces. For me > figuring it out otherwise is higher math. > > I've found that water spray can do that sort of thing too, if you were near > some surf or a waterfall and got a bit of mist on the lens. > > bill > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions.
-- Rob Studdert (Digital Image Studio) Tel: +61-418-166-870 UTC +10 Hours Gmail, eBay, Skype, Twitter, Facebook, Picasa: distudio -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
