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Member Since 20 Feb 2007
Offline Last Active May 27 2015 05:52 AM

Posts I've Made

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

19 March 2015 - 08:09 AM

I have been hoping the new Oly 7-14 will fit in the Zen 170 I use now for the Panasonic 7-14 and Oly 12-40.  I have my doubts that it will fit... http://www.43rumors....ize-comparison/


But am keeping my fingers crossed, as I don't really have room to pack another largish dome.  I guess the other option is to go to the Nauticam 180 with the adapters for both the 12-40 and 7-14, but I wold prefer not to.  We shall see....

In Topic: New Olympus WA lenses

08 February 2015 - 08:35 AM



In my opinion, nothing is really wrong with the Panasonic 8mm in a zen dome port.  But leaving aside financial constraints, most of us always are looking for newest and bestest :-)


Beyond that, I do think that GENERALLY, the Oly lenses on Oly bodies seem to produce less ca and I sometimes cannot completely get rid of all of it in Lightroom.  Also, being a 1.8 gives a bit more latitude on shutter speed which can sometimes be nice, and may help with faster focusing.  Additionally, it seems to me that the Panasonic gives best results around 5.6 to 6.3. Faster than that and I think the edges start softening more, but closed down more the images in general seem a bit softer, perhaps due to diffraction.  Since most lenses are at their best 1-2 stops from max, a 1.8 MIGHT give a wider range of apertures that yield best results.


In the end, these differences are minor and my skills, not the camera and lenses, are the major limiting factor in my photography.  Still, I am eager for the 7-14 and the 8mm to arrive.


In the meantime, I enjoy the Panasonic the lens quite a bit.

In Topic: Olympus 12-40 F/2.8 and the Zen Underwater DP 170 n85 port

29 December 2014 - 10:21 AM

I don't know whether it is balance or just weight, but I find that the glass dome is much more comfortable to hold since it is not always wanting to twist upward.  On the other hand, I did need to more buoyancy to the setup.  Adding weights to the shade of the acrylic dome should accomplish the same thing.  I, too am very much hoping the new 7-14 will work in the current Zen dome. 

In Topic: Olympus 12-40 F/2.8 and the Zen Underwater DP 170 n85 port

27 December 2014 - 06:49 AM

Ted, many thanks for the reply, I thought that would be the answer.

Do you think adding some weight to the bottom of the dome would help it? I'm just trying to think of a way to make it more user friendly in the water

I'm planning to get in a pool soon to test it all out and want to take with me some options to try


I'm not Ted, but can share my experience, in the hope it helps.  I used to have a 6" acrylic dome for the 7-14.  To combat its handling issues, I bought an ankle weight; one of the ones you fill yourself with sand, and then I experimented with how much sand I need to make the dome less inclined to tip up.  It helped, was not completely successful because the weight was too close to the housing.  I was thinking of using tape, velcro or glue to attach some lead strips to the bottom shade portion of the housing, and then learned that there are stick-on weights that can be found at hobby/model railroad shops and for balancing tires.  I don't know how well they stay on underwater because before it came to that, I moved to a 7" glass dome that would accommodate the then-new 12-40.


I would suggest you try the stick on weights.  They are available on ebay if you cannot find them elsewhere.


That solved the problem.  

In Topic: Nauticam Mirrorless ports depth rating

20 November 2014 - 09:46 AM

I can't speak for Nauticam, but I suspect no one replied because no one had an answer?  My working assumption (unless cautioned otherwise for a specific port)  is that the ports are rated to the same depth as the housing, unless perhaps you get one of their "deep rated" special order housings.


It would not surprise me if the larger glass domes have a shallower rating than a smaller acrylic port.  


Since I don't dive to 60m, let alone 100m, I guess I have never given this much thought.


Edit to add...This might be of interest to you: