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troporobo

Member Since 23 Jul 2010
Offline Last Active Today, 07:58 PM
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Topics I've Started

Looking for inspiration: favorite non-UW sites / blogs?

13 January 2016 - 09:30 PM

I'd be interested to hear from folks about their favorite web sites and blogs for photography. I really like the coverage and the community here on Wetpixel and would like to find something similar for above water photography, particularly landscapes and wildlife.

 

FWIW, I read fstoppers and Petapixel occasionally but find the former too much geared toward pros and studio work, and the later is too often superficial, and neither has a discussion forum. DP Review is good sometimes but the discussions are more about gear than photos. Nat Geo is fantastic for inspiration but light on discussion. Others I have come across don't have enough content to be compelling. 

 

All ideas welcome!  TIA


nudibranch experts: help ID a flabellina

01 January 2016 - 04:17 AM

I found this tiny nudi yesterday in Anilao.  It was less then 10mm long, on a wall between 8-10 m.  There was a current so I didn't get a good chance to work on a better image in profile (nor get really sharp focus!).  Anyway, at first I thought it might be f. exoptata which I have seen around here regularly but now I am fairly sure it is not.  The closest I can find on Nudipixel is f. cynara or f. arveloi but neither seem correct and the range of those two is nowhere near here.  Maybe this is a juvenile?  Help with an ID much appreciated!

 

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macro with diopters - finally getting the hang of this

24 October 2015 - 03:45 AM

I've been on a quest for a while now to get some decent shots of pygmy seahorses (an opportunity that I am fortunate to have regularly).  I started with the Olympus 12-50 lens on "macro" setting, then tried the Olympus wet lens on top of that, and now have finally acquired a proper macro lens and Subsee +5 and +10 diopters.  I can't believe I didn't just start with the right combination straight away!  I think that I am finally starting to get the hang of this setup.    
 
Although lighting the little buggers can be a challenge, and I have yet to convince one to look straight at the camera for its portrait, I am happy with these shots. These are pretty much straight out of the camera, with a touch of exposure and contrast correction, but no crop. 
 
Shot with the Olympus E-M5, 60mm macro lens, Subsee +5, and Inon S-2000 strobes.  
 
 

Comparison: Olympus m4/3 macro options

29 July 2015 - 05:25 PM

I have been on a quest to shoot some small critters (we have pygmy seahorses at two local sites, and lots of other stuff) and looking to get ever closer. But UW gear is hard to get here and expensive and I could not find the sort of lens comparison that I needed to be confident of having the capability that I wanted. I was also curious about the running debate about the Olympus 12-50 lens and whether it is worthwhile getting the expensive Nauticam port and gear to access the 43mm macro mode or just using the 50mm normal mode plus a diopter.

 

So I put together this simple and somewhat unscientific test to show what is possible with the lenses commonly used by Olympus m4/3 shooters. Lenses are the Olympus 12-50mm zoom and 60mm macro.  Diopters are the Subsee +5 and +10. Camera is an E-M5, housing is Nauticam, and port is the Nauticam with zoom gear. The nudibranch "model" is plastic!  Cutting to the chase, here is what I found: 

 

60mm macro: Maximum native magnification obviously, diopters take it to 2.5:1 and provide closer focus but not much magnification difference between +5 and +10 diopters, very short working distance with diopters is a challenge.

 

12-50mm using 43mm macro mode: Usable native macro but not good enough for the smallest targets, not much additional magnification with diopters, working distance with diopters probably too short. 

 

12-50mm at 50mm normal mode with diopters: Using the +10 produces results very similar to the 43mm macro mode with a useful extension to working distance. However not good enough for my purposes.

 

Data and photos follow.  Full size versions can be found here: https://www.flickr.c...157656370044855

 

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60mm macro

 

 

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60mm macro with +5

 

 

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60mm macro with +10

 

 

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Looking for double flip adapter for wet lenses

12 May 2015 - 11:09 PM

I want to get a double flip adapter that will let me mount +5 and +10 wet lenses.  I'm using a Nauticam flat port with a 77mm thread at the front. 

 

Nauticam does not seem to make a double adapter (but their single adapter is very nice).  I've seen the Saga double adapter but its apparently only available with a 67mm thread and its unclear if I could mount this with a 67-77 adapter without vignetting.  The Reefnet would appear to do the job but its not clear to me how each swing arm is locked in place at either the open or closed position and whether the lenses would thus flop around, and the set screw mounting to the port looks less than robust. Neither Deeproof/Divervision not Fun-In (both in Taiwan) appear to offer a double adapter, though the swivel idea looks interesting for a single.

 

I've checked the archives but not come up with other ideas.  Are there other recent options I have missed?  Any thoughts from those who use the Reefnet double?