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Member Since 25 Apr 2009
Offline Last Active Oct 05 2016 07:55 AM

Posts I've Made

In Topic: Full Frame SLR wide angle corrector port tests

22 December 2014 - 06:35 AM

This type of correction lens is discussed in Lawrence Mertens book "IN-water photography" published in 1970. By this time Ivanoff had a corrected wide angle lens"I think in a nikonos mount" The book  goes deep into the physics of the port science.  It is one of the definitive books on underwater photography physics. It scan be found used on amazon.

In Topic: For Sale: Nauticam 6" port for mirrorless housings

28 April 2014 - 04:57 AM

I am interested. email me @ tobyarmstrongus35@hotmail.com and discuss details.

In Topic: For Sale: Nauticam 4.33 Acrylic Mini Dome Port

25 March 2014 - 07:22 AM

I am interested in the port. Do you think it would work(without vignetting) with a 7.5 fisheye on the em5 housing ?