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Member Since 23 Jul 2010
Offline Last Active Yesterday, 05:50 AM

#359057 OM-D with +5 or +10 diopter for 12-50mm Olympus?

Posted by troporobo on 21 March 2015 - 05:17 PM

OK, so I found a local dealer willing to let me test with my setup (Olympus m.Zuiko 12-50 lens in Nauticam flat port).  I tried the SubSee +10 in the Nauticam flip adapter.  My objective was maximum magnification (we consistently find pygmy seahorses on our local dives) so I did not test permutations at constant distance.  As luck would have it I forgot to check my camera battery and it started flashing red on the first test shot so I had to rush, hand-holding a heavy housing over a poorly lit sales counter, hence these images are not very good, but they show the most important parameter which is maximum image size.  


First, the lens at 43mm macro mode, no diopter.  Closest focus is about 50mm from the front of the port. Horizontal image size is about 35mm:




Then, same 43mm macro mode with the Subsee +10.  Closest focus is actually touching the lens, resting the front of the Subsee on the edge of the ruler.  Horizontal image size is about 28.5mm:




Finally, for those without the Nauticam gear for this lens, I tried The Subsee +10 at 50mm (normal not macro mode).  Closest focus was about 50mm from the port and horizontal image size is about 32mm 





I conclude that this combination doesn't do what I was hoping, as the relatively small increases in magnification (about 25%) is offset by the loss of working distance, which would make approaching and lighting anything animate just about impossible.  


Also for those hoping to save on the cost of the expensive Nauticam zoom port and gear for the 12-50 lens, it seems you can save $400 by buying the macro port and Austrian zoom gear, but end up at nearly the same image size as the 43mm macro mode, and need to spend about an extra $400 or so for the Subsee and flip adapter.  


So for now I am going to stay happy with the versatility of the zoom lens, and buy the 60mm macro.  Once I have that lens, then maybe the Subsee will produce the results I am after.  

#356480 A few shots from Lembeh

Posted by troporobo on 11 January 2015 - 04:14 PM

Excellent images all.  I especially like your use of plenty of negative space and the jet black backgrounds.  I struggle with backscatter in these shots as we are usually shooting around a lot of turbidity in the muck, so will eventually start playing with a snoot also.   Nice work!

#354434 Unidentified Halgerda from Cenderawasih

Posted by troporobo on 17 November 2014 - 09:46 PM

The closest match I could find on Nudipixel seems to be Halgerda willeyi.  It's documented range (a triangle from Taiwan to Australia to Egypt) ) is huge.







#353658 Nudibranchs of PNG

Posted by troporobo on 24 October 2014 - 02:18 AM

Really fantastic work Dustin!  I can truthfully say I have not seen nudis like this before, and they are my favorite macro subject.  Thanks a lot for sharing.  

#352777 Papua New Guinea - Rolling in the Deep

Posted by troporobo on 21 September 2014 - 01:51 PM

Nice.  I'll have to try that setup with stills. Thanks for the tip.

#352720 Papua New Guinea - Rolling in the Deep

Posted by troporobo on 19 September 2014 - 03:26 PM

Absolutely gorgeous work!  Thanks for posting.  I especially like the macro sequences at the beginning, they are so well lit.  Speaking of which, how did you light the anemone that begins at about 2:50 to look like it is glowing from within?

#350798 PNG Baggage restrictions

Posted by troporobo on 25 July 2014 - 05:51 AM

Are you sure you can't check baggage all the way through? I've done it after arriving at BNE on at least 4 different airlines. Just go to the transfer desk, show the bag claim number, and they do the rest. Seems weird that it would require entering Australia only to check in again, rather than going to the transfer desk while in transit. But I have not had to do this myself so can't be sure.

If you did have to go through immigration and customs with your luggage, check in upstairs, then go back through the process the other direction, 2 hours is comfortable. BNE is not large and rarely very congested, and once you're checked in you're safe.

#349318 Hairy frog fish right ???

Posted by troporobo on 22 June 2014 - 02:41 AM

Not sure, but I think you are right.  Anyway, that is a spectacular photo!  Very nicely lit for such a tough subject.  Where did you shoot it?


You have some very nice shots in your Flickr galleries also.  The porcelain crab on a blue anemone is really something.

#348803 2nd strobe on Nauticam NA-EM5: Where to mount the strobe arm?

Posted by troporobo on 07 June 2014 - 05:16 PM

There's some discussion and photos of alternative setups beginning in about the middle of page 12 of the massive EM-5 thread:




I use the Flexitray with both handles, with the right handle moved tight against the housing.  I can shoot one handed like this fairly easily, and find it gives me better stability when shooting two handed.  But I am sure that using the M10 mount would also work just fine as long as the arms and clamps allow enough flexibility to position that right hand strobe. There is a photo of exactly that setup on p. 14 near the bottom

#347952 Olympus OM-D E-M5

Posted by troporobo on 20 May 2014 - 04:15 PM

It will be negative, even with four Stix floats, but not so much that handling is impaired.  I shoot the same rig on 60-80 minute dives all the time with no fatigue 

#347951 Nauticam buoyancy help needed

Posted by troporobo on 20 May 2014 - 04:11 PM

I have almost the exact same rig , though with the 12-50 lens and zoom gear and flat port that are definitely heavier.  Even with 4 Stix jumbo floats its definitely negative.  I would like a little more flotation and will probably add 2 more of the same floats.  However I find the rig to be compact enough that handling is generally pretty good

#346667 Philippines recommendations

Posted by troporobo on 23 April 2014 - 05:28 PM

Thanks for the tip.  That's on the back side of Maricaban Island, right?  I'm not a cave diver so would not penetrate far, but maybe the entrance is interesting

#346559 Philippines recommendations

Posted by troporobo on 21 April 2014 - 04:28 PM

A cave in Anilao, really?  Where is that?  My DM has never mentioned such a site, so I'd like to check it out next weekend!

#346450 PNG Baggage restrictions

Posted by troporobo on 18 April 2014 - 05:31 PM

Good idea, but that route (and most others in PNG except to the Highlands and a handful of the other major destinations) are serviced by their Dash 8 aircraft, which is part of the reason they are strict on baggage.


The routes served by their F100 aircraft, including Madang and Kavieng and a few others, have an alleged "business" class but it's not much different from economy in terms of space so I don't bother, but the extra baggage allowance might make sense in some cases.

#346414 PNG Baggage restrictions

Posted by troporobo on 18 April 2014 - 12:38 AM

I put about US$20 in PNG kina in each front pant pocket and claim that's all I have.

These days PGK 20 (about USD 8) is unlikely to impress anyone enough to bend the rules. That's about the cost of 2 beers. I travel on short business trips without much luggage so have never tested it, but if I was hoping to get some favorable treatment, I would have considerably more in reserve.