I'm planing to buy a B+W 10 stop filter (77mm) in BNS but find it hard to get one, my second option is to get a 9 stop Kenko ND 400 (77mm) and stack it with my Kenko Pro 1D CPL (77mm). If I can't find a 10 stop filter, here are my questions to those who have experienced this:
1. Will stacking 2 filters, 9 stop Kenko ND400 and a Kenko Pro1D CPL on a 24mm 1.4G cause vignetting?
2. Will the result of stacking those 2 filters be close to using a B+W 10 stop filter? Any significant difference?
3. If stacking the 2 filters is ok, does it matter which one (CPL or 9 stop filter) to attach first to the lens? and will the metering method be the same as how to meter as if using a 10 stop filter?
Thank you
1. Will stacking 2 filters, 9 stop Kenko ND400 and a Kenko Pro1D CPL on a 24mm 1.4G cause vignetting?
2. Will the result of stacking those 2 filters be close to using a B+W 10 stop filter? Any significant difference?
3. If stacking the 2 filters is ok, does it matter which one (CPL or 9 stop filter) to attach first to the lens? and will the metering method be the same as how to meter as if using a 10 stop filter?
Thank you