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Set – up for success: 5 Rules to capture amazing underwater images

7/29/2014

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Diving alongside the wildlife and vastness of the ocean is an unbelievable experience as is. However, there is nothing like capturing those moments and memories created with the use of a DSLR camera and underwater housing.

Before one can capture any shot of their adventures underwater, one must become familiar with the equipment used. This article is meant to focus on the basic set-up of a DSLR (the example being a Nikon D200) camera and kit of the DX D200 underwater housing, which is utilized in the Ocean’s Campus Underwater Photography Internship in Mozambique. Below I will list 5 basic rules to follow before embarking on your voyage into the world of underwater photography.

1) KNOW YOUR GEAR.

Begin by familiarizing yourself with your equipment; get to know your DSLR camera and its settings well enough on land before using it with your housing. Know what ports to use along with which lenses, and plan beforehand what you intend to photograph (for example, you don’t want to make the mistake of setting up a 105mm macro lens port with a wide angle lens.) Have your settings ready and know how to adjust your settings and where the controls are for basic camera functions. The lenses you can expect to use are the 105mm macro, 60mm macro, 20mm wide angle, and 16mm fisheye.
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Underwater photography interns, Cullen and Tella, familiarizing themselves with the settings of a DSLR.
2) UNDERSTAND YOUR HOUSING.

The housing discussed will be the DX D200 – constructed of corrosion-resistant aluminum alloy with a black finish. It is durable and designed to protect your camera, with easy access to the controls. The camera installation is fairly simple, with port locks on each side to secure your camera and has a shutter able to provide feedback when pressed halfway tripping the shutter. The viewfinder have a 0.66x magnification and there is a base plate, which contains a cog to control the M/S/C focus modes, which attaches to the camera tripod mount located within the housing. Know how your housing pieces together, keep the o-rings greased, and know where the latches controls and buttons are located – buttons such as the power switch, shutter, main command dial, ISO settings, the exposure compensation button, etc.
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Complete set up of a DX D200 housing with strobes attached (above). O-ring and grease and disassembled housing (below).
3) ACCESSORIZE APPROPRIATELY.

There are 2 types of ports you will be using for the DX D200—one of which is adjustable for use between a macro 60mm and a macro 105mm. The other port is for wide angle and fisheye lenses. Both are easily removable and fitted to the housing. Pay attention to which lenses you intend to use to match them up with the proper ports. For wide-angle surface shots, you will only need the camera, a wide angle lens and a wide angle port. However, when shooting macro deeper below the surface you will need strobes.
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Various ports.
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Strobe arm.
4) ILLUMINATE YOUR SUBJECTS.

You do this by using strobes. You will be using YS 90 Sea & Sea Strobes - these are important to illuminate your subject and bring back colors that are lost with depth in diving (such as the color red). Also, strobes help bring out clarity and make your subject sharp. Re-attachable diffusers also come with these strobes and they attach to the camera housing using strobe arm connectors. Strobe arm connectors are adjustable and reach out about a foot from the camera. Most underwater photographers use two strobes, although it is also possible to use just one. Sync cables are used to connect the strobes with the camera housing - without them your strobes will only be able to fire manually. These sync cables connect the auto trigger with the strobes you are using.
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YS-90 Strobes.
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Sync cable.
5) CLEAN, MAINTAIN, REPEAT.

Maintenance and cleaning is KEY. It is important to check and clean your equipment before and after every dive to avoid unnecessary corrosion resulting from the saltwater, as well as to keep your equipment in consistent working condition. When first setting up your camera and housing, you want to be in a dust and sand free zone, with your set up station as clean as possible (just a grain of sand can be the difference between having a flood or a leak into the camera housing.) Use a towel to avoid accidental scratching of your ports and lenses, and also as a cushion while setting up. 
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Interns in the process of cleaning and setting up their camera housings.
Preparation and planning is the key to get that once in a lifetime cover shot. Make sure that you do not leave the ocean disappointed after an exciting SCUBA dive and photo session by always following these 5 rules before heading out into the deep.

*** Some equipment images used found via Google search.
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A day in the life of the Hingebeak Shrimp - a.k.a the "Ocean Manicurists"

4/19/2014

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Ranging from 1-5 cm in length, these small social groomers like to hang out in large groups (up to 100) under the coral reef ledges and overhangs of the Indo-Pacific.

Part of the decapod crustacean subphylum-- they are the Rhynchocinetes durbanensis, also known as the Hingebeak Durbanensis Shrimp.   
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Image credit: Fiona Ayerst
The derived family name of these shrimps (Rhynchocinetidae) means ‘movable beaks’--- indicating their beak like rostrum that can bend. This rostrum can also be used for attack or defense from predators if need be.
PictureImage credit: Fiona Ayerst
Although their diet mainly consists of small crustaceans, fine algae and carrion – the Hingebeak Durbanensis are specifically known for their diligent cleaning habits and symbiotic relationships with various fish.
  
The Hingebeaks (along with other types of shrimp) have antennae, which have sensors on them that allow the animals to “smell”, “taste” and feel where they touch. Typically, long antennae help the shrimps orientate themselves regarding immediate surroundings-- while shorter antennae help judge what is and is not prey.

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Lionfish
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Mantis Shrimp (Image credit: Levi, Guinjata Dive Centre)
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Solefish
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Scorpionfish
There are some fish the Durbanensis do steer clear from-- such as lion fish, solefish, mantis shrimp, and scorpionfish (due to being the shrimps natural predators.) 
PictureImage credit: Kim Vu
The Hingebeaks “job” in the ocean is to reside at natural 'cleaning stations', to help keep rid of dead skin and parasites off of their “friends” while gaining nutritional value from the parasites. There was a rumor that sometimes they even take on humans as their clients... So on the next dive, I decided to see for myself. 

After arriving at a dive site called Levi’s Ledge (with courtesy of Guinjata Bay Diving Centre) I was shown one of these 'cleaning stations' where the shrimps typically reside.
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I completely emptied out all of the air in my BCD and laid on the ocean floor, right next to the overhang where the shrimps were. I noticed that the more movement I made, the more wary the shrimps were of my presence. I began to slow my breath much more than before (never holding my breath, of course - Scuba Diving 101) and lay as still as possible (given the surge and ocean currents).    
PictureImage credit: Fiona Ayerst
The first shrimp to climb on my hand had initially felt my fingers with her antennae for a few minutes to make sure I was a safe customer. Once one decided to climb on and begin cleaning my cuticles, the others slowly made their way on my hand as well. It was amazing to interact with these little ‘ocean maids’, and to feel their miniature claws, as they worked so hard at tearing away any dead skin.

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Image credit: Fiona Ayerst
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Image credit: Fiona Ayerst
With some patience, a few of us even dared to get our mouths “cleaned” as well.
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Image credit: Cullen Welch, Matt Dobson
The video below created by Martin Totland, shows a Yellow-mouth Moray Eel's relationship with these shrimps at the 2:30 mark and again with one of our groups members interaction at the 2:50 mark.
Male Hingebeaks have much larger claws than the females, and most of the shrimp which cleaned our hands were in fact female. I realized this only when I spotted one with claws larger than his eyes.
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Male Hingebeak to the right (Image credit: Fiona Ayerst)
The Hingebeaks eyes are some of the coolest I have ever encountered. Their eyes are located on the tips of two stalks coming from the head, with pupils appearing as if they are made of geometric shapes.
PictureImage credit: Kim Vu
Most prawns, as well as the Hingebeaks, have panoramic vision and compound eyes-- which are very good at detecting any movement. The term 'compound eye' means that the eye itself contains thousands of individual receptors and a single image is broken up into a combination of inputs. Each input is located on a convex surface and points in a slightly different direction. Compared to our eyes, a shrimp’s eye can detect fast movement and possesses a very large angle of view.

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Image credit: Kim Vu
Hope you enjoyed this post on these teeny ocean maids! 
Now go do some diving.

***I do not claim to be an expert on these minute beings, and all information provided is derived from either personal experience, shared knowledge from others and/or web research.

References:

http://www.nausicaa.co.uk/durban-hinge-beak-shrimp.html

http://decapoda.nhm.org/pdfs/26334/26334-001.pdf

http://www.liveaquaria.com/product/prod_display.cfm?c=497+525+690&pcatid=690

http://therightblue.blogspot.com/2009/09/stalking-wily-night-critters-hinge-beak.html

http://en.wikipedia.org/wiki/Shrimp

http://scienceblogs.com/pharyngula/2008/05/24/the-superior-eyes-of-shrimp/

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    My name is Kyra Kalageorgi.

    This blog is about my travels in various places, my experiences in diving, photography and art.

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