Eric Weir wrote: >On Nov 2, 2013, at 12:38 PM, Mark Roberts <[email protected]> wrote: > >> I'll confirm everything Godfrey wrote and add one more detail: >> ordinary lens glass filters out virtually all UV. I have a friend who >> occasionally shoots UV and he has to use a special fluorite glass lens >> to do so (it's an ungodly-expensive Nikon macro specifically made for >> UV photography). >> >> Flare from filters, especially non-multicoated filters, can be a real >> issue. Particularly veiling flare which isn't always obvious. > >Thanks, Mark. Just wanted to double-check my understanding: Ordinary lens >glass without flyers filters out UV?
Yep. It's actually quite difficult to make glass that *doesn't* block UV. Hence the extremely expensive lens necessary for shooting under UV. -- Mark Roberts - Photography & Multimedia www.robertstech.com -- 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.
