For sale: Inon close-up lens UCL-165M67, with 67mm thread mount.
I think it's also loosely referred to as a wet lens or a diopter.
The condition is like new. This was used 2 days (with an Ikelite housing), though I understand it wasn't a suitable add-on for my Ikelite G9 housing (hence the used only 2 days!).
This comes with the original box, packaging, instructions, unused package of Inon extras.
$140 incl shipping in US (UPS ground insured)
