Forum: Pentax SLR Lens Discussion
04-09-2007, 05:37 AM
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I use 2 and 3 stop Hightech GNDs and a Singh-Ray RGND with the Cokin P system for the 21mm and 40mm. They work very well, just get the wide angle holder, as I have noticed some vignetting on even the 40mm with the regular holder.
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