andreas612 wrote:
ok, thank you for your reply. Maybe I'll change then to the cokin Z-pro system
If you are interested in doing long exposure work with a 10stop ND filter I would not recommend going with a square filter to use with a Z-Pro or other type of holder. You will most likely still get some vignetting. You will also have issues with light coming in from the sides of the filter, it is best to use a screw on circular filter. This is really important for exposures over 30 seconds.
Slowboat wrote:
If you are interested in doing long exposure work with a 10stop ND filter I would not recommend going with a square filter to use with a Z-Pro or other type of holder. You will most likely still get some vignetting. You will also have issues with light coming in from the sides of the filter, it is best to use a screw on circular filter. This is really important for exposures over 30 seconds.
I'd second that. The square filters rarely go to something as dense as a 10 stop and even if they do then i can't help feeling the B+W would be better. I use squares for grads and circular for strong NDs. Just trying to decide if I switch my square NDs to circular B+W ones...
