10-stop and Cokin filter holder issue

[Pietrach]

Hi

I am currently using a screw in filter for long exposures (10 stop filter). there is no light leek around the filter as the filter is screwed onto the lens. I will not be switching to square filters, and the first system I will be trying is the Cokin system. I just got the holder first to check if P series is wide enough for my lens, but looking at it there is a gap between the lens and the closest filter slot. This means that if I slot in a 10-stop filter there will be light leaking in all around the filter. Am I missing something or is the standard Cokin P filter holder not suited for long exposures?


Thank you for any advice on this.

 

[Andy Into The Wild]

It's generally the better quality (and more expensive) solutions that have gaskets. Lee, Nisi, Formatt Hitech etc. You could of course buy a 10 stop where the gasket is on the filter, but I highly doubt it would fit the cokin P holder exactly.

 

[Pietrach]

It's generally the better quality (and more expensive) solutions that have gaskets. Lee, Nisi, Formatt Hitech etc. You could of course buy a 10 stop where the gasket is on the filter, but I highly doubt it would fit the cokin P holder exactly.

Thanks. From what I read the P series 10 stop from Coking does not have a gasket. Only the Z and X series do. Can anyone confirm this?

Edit: Just found on the website: ND32 or above filters come with a foam mask to be inserted between the filter and the filter-holder hence preventing light leaks.

I imagine i could leave such foam on permanently.

Thanks.