"Lasse Karlsson" <[EMAIL PROTECTED]> wrote: >From: "Shel Belinkoff" <[EMAIL PROTECTED]> > >> The K18/3.5 has a few built-in filters, as i imagine a few other lenses >> have as well. One is a "cloudy" filter. OK, I'm ignorant: what does a >> cloudy filter do? > >Direct quote from > >ASAHI PENTAX FILTERS [Printed in Japan 1963.] >[...] > >Cloudy >"Cuts through haze, and prevents excessive bluish results, thereby giving warm tone >in open shade and cloudy days. More effective haze cutter than the Skylight filter." > >The exposure factor is 1.5. In 1963 it was available for the 46 mm and 49 mm thread. >The page I am quoting from came in the box of my Pentax 49 mm Cloudy filter, and >happened to be right beside my computer as I read your post.
Actual response curves for Pentax filters: http://www.robertstech.com/graphics/images/filter.gif (I haven't done a proper web page for it yet but I probably will.) -- Mark Roberts Photography and writing www.robertstech.com
