Re: The Singh Ray Vari ND is expensive. And worth it!
 

HEy all, thanks for the info.
I bought the Genus Variable ND and found that it is unusable at the longer focal lengths. I suspect the Singh Ray may also have trouble at 270 mm-but perhaps less. The Genus creates a totally distorted image.
IF you find a review with comparison of the filters side by side, I'd love to see it before I buy the SR.

Re: The Singh Ray Vari ND is expensive. And worth it!
 

That said, I will plan on using the Genus on the wide to mid ranges, as I did not perceive significant distortion. It would be good to know if the SR is worth the significantly higher price.