Just a big thanks regarding information from many on this site regarding viewfinders.
I went to a local diving shop pool to test out my new Nauticam 180 viewfinder. There was another photo addict there that mentioned he just sent his Nauticam 45 viewfinder back. He could not find his subject when shooting macro and did not press through the learning curve. He gave up and sent it back.
If not for this site and all the advice given, I would have purchased the 45 viewfinder and been as frustrated as the other guy. Instead, when I went into the pool with the 180, I could immediately find the test subject in the viewfinder and all looked so wonderful. So I am looking forward to my up coming trip with the new viewfinder.
So thanks to many, particularly the A. Mustard viewfinder article some months back, for aiding in selecting my latest gadget.