Daniel J. Matyola wrote: >On Thu, Jul 23, 2015 at 7:34 PM, Ken Waller <kwal...@peoplepc.com> wrote: >> Similarily, there are single element 'close up' lenses that are only one >> element like a filter and they screw on like a filter but are called lenses. > >Yes! I have one of those someplace, but I haven't used it for 15 or 20 years.
The best ones are two elements cemented together and are achromatic. Pentax made some really good ones, of which I have a couple in 77mm thread. Quite useful when you don't want to carry a dedicated macro lens. I've also got a Sigme 2-element close-up lens in 58mm size and it's very, very good. -- Mark Roberts - Photography & Multimedia www.robertstech.com -- 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.
