Alfredo R : HI. Which diameter is this filter. I'm very interested to mount it on a 72mm objective?
And I don't have the possibility of using a filter holder, because it's for underwater photogrphy.
Thank youANDREW R : I'm not sure I understand your question. This filter is designed for use with the Cokin "P" system <a href="http://:http://www.adorama.com/CKBPP.html" target="_blank">:http://www.adorama.com/CKBPP.html</a>