Regarding the flip holder I would not agree that a 77mm closeup lens is going to be any better than a 67mm closeup lens because the AOV of the lens remains the same and would pass through the same center area of the glass with each.
A 77mm to 67mm step down ring may work for the time being if you don't get the flip adapter in time and is not to expensive. http://www.bhphotovi..._Ring_Lens.html
Looking at the complex design of the 12-50mm zoom/macro button gear may give some a better idea of why it is priced higher than other much less complex gears and why Nauticam has been the first underwater housing Co. to win the Red Dot design award.
Thank you for the good idea to use a step down ring , I should have think of this by myself !! And more of all it's cheapest than buy another wet lense , very good !!
I'm completely convince that the price of the zoom gear for the 12-50 and the port are completely justified by the technical challenge and work that it needed , what I mean't was only that the zoom gear seems difficult to set up for me at home , but my husband will help me !!
But as long as I will not know what "PHD" means I will not be able to avoid misunderstood , the only explain I found on internet was about "Doctor of Philosophy"
Edited by girelle, 04 October 2012 - 08:35 AM.