Thanks alot,
QUOTE(ieR @ Mar 23 2012, 04:12 PM)
i) i suggest to go for screw on filter. but u might still loose about 2mm of shooting angle, meaning vignet free at 13mm F8.
so anything at 11-12mm is unusable? Tian-Ya Wide Angle Square Filter and Cokin "P" BPW-400 wide angle Holder is it the same? how these two perform?
QUOTE(ieR @ Mar 23 2012, 04:12 PM)
ii) the wide angle case. if u use just ND, u can turn the holder 90degree(filter fit in horizontally) to use it. If u use GND, where filter must be vertically to use, u may still have vignetting issue at 11mm. unless u go for 100mm filter holders, Lee filter or Cokin Z.
Lee filter and Cokin Z is way too expensive..
QUOTE(ieR @ Mar 23 2012, 04:12 PM)
iii) the step up ring will make any vignetting worst (from my experience) and worst, 'flexi' (actual name is called FADER ND) is actually two CPL reversed, if u know, UWA doesnt work well with CPL.
u mean CPL wont work good on UWA? u meant uneven effect in the sky? actually im planning to get cpl for tokina11-16.
This post has been edited by Alexdino: Mar 23 2012, 04:46 PM