Kenko Variable NDX - Avoid Vignetting with Variable NDX

Avoid Vignetting
The singular versatility of the Variable NDX filter not only replaces a
whole set of stacking neutral density filters it also removes vignetting
which may be caused by using multiple filters.
7
Stacking ND filtersWith Variable NDX filter
NDX-Manual-F02 11.8.3 7:45 PM Page 7