M M markdizle Nov 20, 2015 Hey the ND filters I have are just little disks that slip in behind the stock UV filter. From phantomfilters.com. GPS is a RF-V16, works well and it's really small. $9 for filters and $30 for the GPS
Hey the ND filters I have are just little disks that slip in behind the stock UV filter. From phantomfilters.com. GPS is a RF-V16, works well and it's really small. $9 for filters and $30 for the GPS