Thanks, Ken. It’s a screw-in Hoya. I have Cokin drop-in filters, but find the colour shift disappointing and quite annoying.
Paul Paul Dunderdale [email protected] [email protected] http://www.flickr.com/photos/dunders/ > On 5 May 2016, at 20:58, Ken Waller <[email protected]> wrote: > > Well done Paul, nice subject, composition & exposure. > > What kind of ND filter is it - screw on or drop in? > -- 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.

