Luminous Landscape Forum

Equipment & Techniques => Digital Cameras & Shooting Techniques => Topic started by: ucs308 on July 15, 2011, 09:25:00 pm

Title: Singh-Ray ND as Polarizer.
Post by: ucs308 on July 15, 2011, 09:25:00 pm

Not sure if this is the right forum, please feel free to redirect if am in the wrong place.

The short version of a long story...I have a job I am preping for. I am away from my studio trying to get the parts I need to together.. I need to polarize lights and camera for a project coming up. I don't have a polarizer for the my current macro lens and wondered if in a pinch the Singh-Ray ND (I already own) would work. I am trying to reduce the glare from a very shiney surface. I thought I read somewhere the Sing-Ray ND is essentially two back-to-back polarizers.

Thanks-in advance.

Title: Re: Singh-Ray ND as Polarizer.
Post by: neile on July 17, 2011, 11:31:27 pm

You're thinking of their Vari-ND, which is two polarizers stuck together. A regular ND filter is just neutral density and has no effect on polarization.

Neil

Title: Re: Singh-Ray ND as Polarizer.
Post by: Wayne Fox on July 18, 2011, 02:19:04 pm

I would think if you set the Singh-Ray vari ND to filter to it's brightest setting, you'll see effects of a polarizer.  It will be twice as dense so you're losing a lot more light, but it might work in a pinch.

Title: Re: Singh-Ray ND as Polarizer.
Post by: Wayne Fox on July 22, 2011, 04:05:09 pm

Just thought I'd add a note to this.  Singh-Ray now sells a Vari-N-Duo, which is basically their variND filter with an additional rotation point behind the two rotating glass elements, which "adds" a polarizer.  I saw one of these last night in a workshop we  held, and all it adds is the ability to freely rotate the two glass elements, indicating using this as a  polarizer definitely works.  If you don't have this duo version, you would have to unscrew the filter to rotate it, but certainly would work as a polarizer.