Singh-Ray have released a new variation on their variable neutral-density filter, the Vari-N-Trio. This filter combines a variable 4-8 stop ND filter, polarizer, and now adds color enhancement filtration.
The Vari-N-Duo (ND plus polarizer) is one of my recommended filters in The Photographer’s Guide to Digital Landscapes; anyone who needs a super-slow shutter speed and polarization while shooting moving water will want to have one. The Vari-N-Trio will begin shipping in limited quantities on December 15th, with full availability expected early 2011.
You can read more about the new Vari-N-Trio filter at Singh-Ray’s website.