Vari-Nd - Thin vs Standard?

[umuima]

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

What's the difference between the the Thin and the Standard version of the Vari-ND? Is it just size?

I'm using a t2i with manual nikon lenses.

Thanks.

 

[ydgmdlu]

Have you considered the less expensive alternatives from Light Craft Workshop and Genus? They have very good reputations.

 

[umuima]

Have you considered the less expensive alternatives from Light Craft Workshop and Genus? They have very good reputations.

I'll look into it, I hear Singh ray is the best though as far as color distortion. and I want the best! I just don't know the different between the two.