Yeah, the first time I'd ever heard ofSingh-Ray was in a recent blog post by Andrew Yip regarding its use in video on the 5D Mark II (http://www.andrewyip.com/blog/2008/12/06/using-a-variable-nd-filter-with-the-5d-mark-iis-video-mode)


TheSingh-Ray filters seem pretty sexy, but their so damned expensive.