Vari-ND Filter

[gr82bart]

http://www.singh-ray.com/varind.html

So has anyone used this? Any comments or reviews?

Regards, Art.

 

[Ian Grant]

Just one thing, aren't they polarising filters ?

Use 2 linear polarising filters and you can do the same thing, but you might not want the polarising effect.

Ian

 

[David A. Goldfarb]

Yeah, that's what it looks like to me. You might also not want to add four air-glass surfaces in front of your lens. You could carry two ND filters to cover a lot of situations.

 

[Steve Smith]

Just one thing, aren't they polarising filters ?

That's what I thought. I think this line from the web page confirms it: The Vari-ND can be used with most other Singh-Ray filters except Polarizers

Use 2 linear polarising filters and you can do the same thing, but you might not want the polarising effect.

I remember doing this at school with two sheets of polariser. Add overlapping strips of clear sticky tape to create interesting colour effects.

http://www.physics.utoledo.edu/~lsa/_color/34_polarize.htm using pieces of polyester film instead of tape


Steve.