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Member Since 22 Feb 2003
Offline Last Active Feb 16 2015 05:47 AM

Posts I've Made

In Topic: Upcoming Panasonic GH-4K

05 February 2015 - 08:16 AM

Thanks for the info Peter, I'll certainly see if I can replicate it.  I haven't witnessed it in my own use.


Apologies for coming across as rude.  My intention was a common, tongue-in-cheek expression of skepticism...

In Topic: Upcoming Panasonic GH-4K

05 February 2015 - 06:41 AM

My favorite wide angle lens for 4k video on GH4 is 8mm fisheye.  The 4k crop knocks out most of the fisheye distortion.  I don't find 7-14 to be wide enough for many situations.


RE: purple reflections in macro video from Keldan lights, I call bs on that one.   I'm willing to be proven wrong if anyone could demonstrate the phenomenon...


Moses is very kind with his recommendation, but I think all of the Nauticam dealers in the Americas are pretty on the ball.

In Topic: Panasonic LX-100 Nauticam housing

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.

In Topic: Move over Sony RX100 (I, II, III), Here come Panasonic LX-100

26 November 2014 - 12:47 PM

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

In Topic: AF-S NIKKOR 20mm f/1.8G ED

26 November 2014 - 08:35 AM

I have a lens, and want to test it, but haven't found the time.  There was some chatter on Doug Perrine's Facebook page about it being less than stellar, but that is the only feedback I have seen.