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RogerC

Member Since 24 Oct 2005
Offline Last Active Jul 28 2015 08:54 PM
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Posts I've Made

In Topic: Olympus 7-14 mm f2.8 will not fit in Nauticam housings

26 May 2015 - 10:38 PM

As long as the lens fits through the hole in the housing, I'm optimistic that nauticam will find a solution.

 

I am looking forward to it, I really prefer a rectilinear wide angle lens, the zoom out to 14/28 is nice for shy subjects, and 2.8 sure is nice. 

 

the f1.8 8mm fisheye probably makes more sense, though. Easier to swim with and will probably have sharper corners, too.


In Topic: OMD EM5 and Pana 8mm Fisheye which dome

08 February 2015 - 09:09 PM

I have the acrylic nauticam 4.33 port, and I did manage to scratch it pretty badly right dead center. The 8mm lens is really eager to focus on the scuff, especially in blue water without any other obvious subject. Whale shark coming? yeah, here's a photo of your dome.

 

I've managed to buff it out, but the dome is so small that it's a little hard to work on. The abrasive kits remove the bad scuff, but then leave a bigger ring of slightly less scuff, which the next abrasive can take out, but then the circle bigger, on to the next abrasive.... it gets harder near the edges to work the abrasive smoothly, and I find it much easier to do on big domes. Your milage may vary.

 

Personally, I'd go glass at the athena price point but not at the zen price point.


In Topic: Socorro & El Nino Conditions

17 January 2015 - 09:14 AM

The water was warm last summer as well. Around los angeles there were many warm water sightings: dorado, wahoo, scalloped hammerheads, green turtles, even a whale shark. One cause I heard was not el nino, but that a different mechanism kept the water warm in the 2013/2014 winter. That's certainly true again right now. SoI'd guess that 2015 will be like 2014. And the Solmar publishes video trip reports on their youtube channel. You might look at the trip reports from last may and see if it looks good.

 

We did Cocos during an el nino, and the hammerheads weren't schooling, we'd only see a few at a time. It was still an incredible trip.


In Topic: Help needed. The dome glass fell out of my Zen dome....

08 January 2015 - 10:21 PM

How big a dome? there can be a lot of square inches there, 3 psi over a dome 10" across is 78 pounds of force. 


In Topic: Full Frame SLR wide angle corrector port tests

23 December 2014 - 11:22 AM

This type of correction lens is discussed in Lawrence Mertens book "IN-water photography" ....   It scan be found used on amazon.

 

Also from half dot com.

 

http://product.half....79&cpid=3514334