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Thread: A Pair of Crocs!

  1. #1
    Lifetime Member Jay Gould's Avatar
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    Default A Pair of Crocs!

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    These guys (girls? whatever!) are from our dive at Wakatobi. They are actually hard to spot because they adapt to the color of their immediate environment rather rapidly. On the same dive we have seen very light crocs like these two, and very dark crocs deep in holes.

    "The Crocodile Fish (Cymbacephalus beauforti) is an unusual looking flathead species that belongs to the flathead family Platycephalidae. It can be found throughout the tropical waters of the world and has been recorded in locations such as the Red Sea, Papua New Guinea and the Great Barrier Reef. It is generally found in shallow waters but has been seen on coral reefs down to depths of 30 metres. It has been observed sitting on wrecks in locations such as the Red Sea and Papua New Guinea and remains very still even when divers approach. The colouration of the body can vary from a dusky colouration to a dark grey. There are generally fluorescent green markings all over the body. The Crocodile Fish is easily recognised by the iris lappet that forms a branching curtain over much of the upper eye (see images below). It is known to eat crustaceans and other species of fish. The Crocodile Fish grows to a maximum size of approximately 60cm." http://www.scuba-equipment-usa.com/m...uforti%29.html

    Camera: G9
    Capture date/time: 30 Sept 08; 101am
    Light condition: 80' diffused
    Lens: EF 7.4 - 44.4mm
    Focal length: 7.4
    Extender: none
    Tube: none
    Flash/Comp: yes - in camera with difffuser
    ISO: 400
    Exp Prog: Av
    Speed: 1/60 sec
    Aperture: f/8
    Exp Comp: 0
    Metering: Center-weighted
    WB: Auto
    AF Drive: One Shot
    Tripod: no

    All C&Cs gratefully appreciated!

    Cheers, Jay

    Cheers, Jay

    My Digital Art - "Nature Interpreted" - can now be view at http://www.luvntravlnphotography.com

    "Nature Interpreted" - Photography begins with your mind and eyes, and ends with an image representing your vision and your reality of the captured scene; photography exceeds the camera sensor's limitations. Capturing and Processing landscapes and seascapes allows me to express my vision and reality of Nature.

  2. #2
    Alfred Forns
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    Big Time impressive Jay !!!! That G9 worked just perfect for those critters with its great dof !!!

    Just had a chance to work one and got nothing even close .. tried hard !!! One of the problems I had was having to take time to find the fish .... amazing !!!

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    Very nice, Jay. Now I have a naive question about color: Are the blue/cyan hues in the material on the bottom, or are they created by the refraction
    of light through the water. I really have no idea how to adjust color on images like this. Is the "real" color in the image you posted, or is it more like this?


  4. #4
    Alfred Forns
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    Hi David its more like the original Particularly the top part since there is light fall off and colors change to all blue !! ... things UW are a bit strange.

    If you make an image at ten feet you loose all your reds and most yellows and by by thirty feet all has a monochromatic blue look !!!

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    Quote Originally Posted by Alfred Forns View Post
    Hi David its more like the original Particularly the top part since there is light fall off and colors change to all blue !! ... things UW are a bit strange.

    If you make an image at ten feet you loose all your reds and most yellows and by by thirty feet all has a monochromatic blue look !!!
    Cool! Thank you. I've never been down there, except down about six feet off Ft. Lauderdale beach. :eek:

  6. #6
    Lifetime Member Jay Gould's Avatar
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    David, the UW photographers - loss of color - mnemonic is ROY G BIV.

    As you go deeper into the water you loose red, orange, yellow, green, blue, indigo, and finally violet.

    We have had all of those discussions about changing what you have seen, removing a twig, adding some canvass etc.

    Frankly, I do not care what I see UW; if I can PP so that the image looks like I have lots of strobes or other light sources to make it look like we were on the surface - that is ok by me!

    The color is there; all we do is turn on a torch or use a flash.

    Gimme gimme color ...........
    Cheers, Jay

    My Digital Art - "Nature Interpreted" - can now be view at http://www.luvntravlnphotography.com

    "Nature Interpreted" - Photography begins with your mind and eyes, and ends with an image representing your vision and your reality of the captured scene; photography exceeds the camera sensor's limitations. Capturing and Processing landscapes and seascapes allows me to express my vision and reality of Nature.

  7. #7
    Alfred Forns
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    Hi Jay That table is some kind of conservative Remember the last time you made an image at 10 meters with available light :)

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    BPN Viewer Bruce Enns's Avatar
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    Great shot Jay, capturing the two of them together!! I like the composition...they look like pals (or mates). I only ever saw them singly on my dives there.

    David, I would add the following to Jay's and Alfred's explanations about colour underwater...when lit artificially at depth with a strobe (flash) or flashlight, the natural colours re-appear, so the sand would look more like it does in your repost (or on a coral sand beach) when lit by a strobe. However, that strobe light too, only travels so far before the shorter wavelengths (reds, oranges, yellows) are filtered out by the water, and this is why you see in Jay's post that the sand is the colour you would expect in the foreground, but gets more and more cyan-blue as you move from there to the upper right in the photo where the strobe light is rapidly falling off.

    Probably more than you wanted to know...

    Cheers!
    Bruce

  9. #9
    Lifetime Member Jay Gould's Avatar
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    Quote Originally Posted by Alfred Forns View Post
    Hi Jay That table is some kind of conservative Remember the last time you made an image at 10 meters with available light :)
    Mate, that is only 33'; and yes, I have shot with available light primarily in places like Indonesia where the water is significantly warmer and clearer than the cold (brrrr) and dark waters of the Pacific off of California.

    In terms of loss of color, that chart is pretty spot on - taken from Michael Aw's An Essential Guide to Digital UW Photography. Awesome photos in the Basic and Advanced books.

    Remember, last year I was limited by the small flash on the G9; I will post some available light images at depth.

    I am looking forward to having the external strobe. The last week of our trip to SA will be a week at the Galapagos; as soon as I am home and settled I will share the keepers with you. :D
    Cheers, Jay

    My Digital Art - "Nature Interpreted" - can now be view at http://www.luvntravlnphotography.com

    "Nature Interpreted" - Photography begins with your mind and eyes, and ends with an image representing your vision and your reality of the captured scene; photography exceeds the camera sensor's limitations. Capturing and Processing landscapes and seascapes allows me to express my vision and reality of Nature.

  10. #10
    Ákos Lumnitzer
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    Hi Jay
    You got a ripper here mate! Nicely done. BTW, the scubaequipment link is a site that has my mate's pictures on it. David Harasti (another bloomin' Hungarian, though born here) He is a scientist currently doing his PHD on seahorses around Port Stephens. Darn fine u/w tog too. It took him years to take my advice and buy a DSLR.

    His site is www.daveharasti.com

  11. #11
    Robert Amoruso
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    Like the comp with the diagonal of the animals. Interesting chart and info on color Jay.

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    Liked the composition and the overall image. and read the discussions with interest.

    Cheers,
    Sabyasachi

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