18065-M16 External M16 Optical TTL-Converter for OLYMPUS/OM SYSTYEM cameras for ISOTTA underwater housings

External M16 Optical TTL-Converter for OLYMPUS/OM SYSTEM cameras for ISOTTA underwater housings. Installation in M16 threaded hole on the top of the housing. Please check compatibility with a specific housing and the need for an extension. New style Olympus Hot Shoe only (5 pins+frame). TTL-Converter does not need a battery. Compatible underwater strobes: Inon S-220 / Z-330 / Z-240 / S-2000/ D-200, Sea&Sea YS-D1 / YS-D3 Mark II/ YS-D3 DUO, Retra Pro MAX (including HSS), Marelux APOLLO III V2.0 (including HSS), Marelux APOLLO-S (including HSS).