John Sessoms wrote: >The lens is a Sigma AF 300mm f/2.8. I have a matching Sigma 1.4x >tele-converter for it. > >https://www.pentaxforums.com/userreviews/sigma-300mm-f2-8-apo-ex-dg.html > >The Astrozap filters come in various diameters. They're actually for >small telescopes.
Do they make them in small sizes for big telephotos that take drop-in filters? -- 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.
