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Member Since 22 Feb 2003
Offline Last Active Mar 18 2015 10:43 AM

#357460 Panasonic LX-100 Nauticam housing

Posted by Ryan on 05 February 2015 - 06:18 AM

Thomas Lam from Nauticam deserves a lot of credit for taking the time to actually measure these (and basically every other lens on the market).  The measurements were actually done twice by Thomas, and verified by Alan Dewey at Reef Photo.


The CMC magnification table listed in the press release is actual measured data, in water.


Working distance is measured from the front of the housing port, or front of accessory lens.  It is the actual space between the underwater system and subject.


All of the systems listed achieved their best "native" magnification at their widest focal length, and very close to the subject.  


All of the systems listed achieved the magnifications listed with CMC are at full telephoto.  It is possible, but not likely that some of these could actually have slightly better magnification if you pulled the zoom back a couple of clicks.  In the interest of consistency we didn't try to establish these situations.  We wanted repeatable results.


CMC isn't just a simple diopter, so I'm going to try to resist those comparisons.  The actual end magnification with today's top compacts (RX100m3, G7X, and LX100) was in line with simple housed +15 diopter macro lenses.  There were noticeable image quality differences, though.

#354701 Move over Sony RX100 (I, II, III), Here come Panasonic LX-100

Posted by Ryan on 26 November 2014 - 12:47 PM

Hey Moses, come on down this weekend and you can take the LX100 for a dive...

#353723 Nauticam Vacuum Valve With BCD inflator

Posted by Ryan on 26 October 2014 - 04:20 AM

I think your best option is an exchange through your retailer...  The valve operates very simply.  Close the check valve, connect the bcd hose, then crack the tank.

#346907 Upcoming Panasonic GH-4K

Posted by Ryan on 28 April 2014 - 06:34 AM

One of these was out diving in Palm Beach this weekend too!  Hopefully some images will be available soon.

#342920 Subal Macro port help

Posted by Ryan on 05 February 2014 - 04:30 PM

One idea would be to skip manual focus and go with the much less expensive FP-120 port...  Autofocus combined back focus driven "lock & rock" techniques is preferred by many users of these systems.


You could add a focus gear from XIT404 at some point in the future should you determine that actual gear driven focus is needed  Some prefer the ergonomics of this solution too, driven from the knob on the housing instead of the port.

#339956 Olympus OM-D E-M5

Posted by Ryan on 26 November 2013 - 08:56 AM

Samyang 7.5 actually vignettes with the shortest available fisheye dome port on Nauticam housings, so we've never bothered to go through the trouble of working out gear solutions.

#339654 OM-D EM-1

Posted by Ryan on 18 November 2013 - 05:33 PM

In the proto design, the stainless steel handle brackets tie in to the top of the housing with m5 screws.  Strobe mounting balls could certainly go there, providing one on each side, and more options than some of the smaller housings have.   A crafty user could also come up with a nice wrist strap mount tying in to that top m5 hole, and one of the bottom handle mounts.


My take on this is that more advanced users tend to (statistically speaking) want handles on both sides, and this supports that more cleanly than an optional tray system.  They could certainly be removed for special configurations.

The inverted trigger style release has worked well in in the past on some housings where handles were optional, namely the old Olympus PT-E series.  Given the similar form factor that may hold true here.

#339028 Adapter for combining Nauticam compact 30 port and subsee +10

Posted by Ryan on 05 November 2013 - 06:18 AM

Nauticam Macro Port 60 + 10mm Extension (which bolts on the back) works well with 60mm /2.8D.  It actually vignettes a bit on full frame at more distant focusing distances.  No issues on DX though, and actually no issues at the typical distances you'd use this lens with.


The geometry of Compact Port 50 (for which there is a sub see adapter) and Compact port 30 is pretty similar (same window size, for example), and that Subsee adapter could likely be adapted. 

#335887 Sigma 17-70 mm dome

Posted by Ryan on 16 August 2013 - 01:33 PM

This lens works well in pretty much everything other than the small 4" dia domes used for fisheyes.  So if you have a mid-size to big dome chances are you don't need to buy anything else.  But if I were setting this up from scratch I'd use a 170mm optically coated glass dome w/ 5-6cm of extension (depending upon the 17-70 variant).

Attached Images

  • DP170-and-60mm-extension_1.jpg

#333779 Subal 1DS mk2 /w Sigma 15mm focus issue

Posted by Ryan on 02 July 2013 - 08:06 AM

That lens will definitely focus without the extension, and I'd venture to say that the results will be indistinguishable with and without.  So this isn't the issue, and I'd keep looking.

#333766 Nikon 17-35mm on D800 with Zen 230mm dome - diopter needed?

Posted by Ryan on 02 July 2013 - 04:56 AM

My take is that this is really best left to the individual photographer...  They should test both setups, and decide what works best for their own situation.


All superwide rectilinear lenses exhibit some corner softness.  Some more than others.  17-35 is about in the middle.


As you know, some lenses require a diopter to focus behind a dome.  17-35 does not in Zen 230.


Single element closeup lenses narrow the fov, increase CA, and induce a strong pincushion distortion.  They also tend to sharpen up corners.  But how important are the corners in most shots?  


Personally, I am tending to not use the diopters whenever possible, as it seems counterintuitive for me to give up the field of view and increase distortion when I don't have to.  I'd rather zoom in a bit, or stop down more, in situations where corner softness will create an issue.

#331291 When is the Nauticam NA-GH3 coming?

Posted by Ryan on 13 May 2013 - 03:56 AM

The current estimated ship date is May 27 from Nauticam, so a few day s later form individual dealers and distributors.  There is a long preorder queue, so it will be some time after that before new orders are filled.


I had the pleasure of shooting some video last week with the final prototype.



Even more fun was macro video with Olympus 60mm!

  • SMY likes this

#329173 Sony 10-18 f4 e-mount lens

Posted by Ryan on 05 April 2013 - 03:50 AM

There are a few photos from the port testing here:



Like all other super wide rectilinear lenses in this focal length range, corner sharpness will be a challenge if used wide open.  This can be managed by stopping down, and working in the 11-12mm range instead of full wide.

#325123 Inon Z240 - do you use external auto?

Posted by Ryan on 25 January 2013 - 01:28 PM

External Auto works relatively well, but requires lots of subject reflectance. Not as accurate as S-TTL, but could be more consistent than a someone who isn't familiar with manual strobe exposure.

It works best if the strobes are are pointed directly at your subject, so backscatter may be an issue.

#322687 Tokina 10-17 on FX

Posted by Ryan on 14 December 2012 - 11:12 AM

I've wondered about the utility of this lens on FX a lot, set at 14-17mm. I've seen imatest results that suggest that the resolution of 10-17 is just above the D800, so while it is nearly resolution limiting, it isn't yet. Worth a test, though...

Tokina 10-17 at 14mm
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Sigma 15mm at 15mm
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10-17 at 14mm Center Crop
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Sig 15 Center Crop
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10-17 at 14mm Lower Left
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Sigma 15 Lower Left
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Draw your own conclusions, but I wouldn't run out and buy a new lens.