StormFX

Hi all !

I decide to exchange my 17-35 with the new 16-35 and not to use 14-24 UW, because I can't use magic filters on this lens and because of sharpness issues. The question is which extension I must use with 16-35, having in mind that the housing is Subal ND3, dome port is DP-FE4. What do you think guys, is this combination will work ? I tried to find answer at Subal web site - Nikon portselection category, but 16-35 lens isn't listed as available choice there. Is the DP-FE4 big enough to guarantee corner sharpness with this lens?

Thank you in advance for your opinions.

Best regards,

Steve