Chromodoris Willani
Wolfgang Pölzer and Barbara Lackner
The best diving waters in Austria 3rd updated and expanded edition
Peter Verhoog and Georgina Wiersma
This book invites you on a mesmerizing journey into the deep blue and beyond the Hollywood image of sharks as fearsome monsters.

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20 Nov 2010 - 4 Dec 2010
Dive into the crystal clear sacred waters of the Mayas! The extensive cave system lying under the Yucatan Peninsula is like a Swiss cheese, full of holes! And after 180 degree turn you go from fresh to salt water!
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Come dive the famed reefs of Raja Ampat with Wetpixel! Raja Ampat, Indonesia, is generally considered to be the center of tropical marine biodiversity. Lush, colorful coral reefs are a backdrop for exceptional fish and invertebrate life.
Join Eric Cheng and Alex Mustard in an underwater photography expedition to Alaska in June 11-23, 2011. We'll be aboard the liveaboard dive vessel, the Nautilus Explorer, for 13 days of exploration between Sitka and Ketchikan.
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Illumination

Nice subject matter and good visibility is a prerequisite for a great image. But just as important is correct lighting.
Published in X-Ray Issue: 29 - May 2009
Authored by: | Photography: | Translation:
Download pdf â–ș Illumination
For underwater photographers, who are not only taking photos during night dives or in caves, there are two different light sources available. The first is natural light (sunlight during the day), and second, artificial light (strobe/flash light).

 Daylight is a constant light source that influences the film or the CCD-sensor in a digital camera as long as the shutter is open. This creates a photographic rule; the longer the shutter remains open with the same aperture, the brighter the image will be. Another aspect in daylight photography is the speed of the subject. To catch the image of a rapid swimming pilot whale, you should not go below 1/250 second. If you do, your image will be blurred.
 Strobes, on the other hand, release their flash in a fraction of a second and are always faster than the shutter. Hence, fast moving subjects are no problem for strobes, as the light emitted will “freeze” the subject in the image.

Exposure techniques
The most ideal subjects are sea mammals that swim near the surface. The best way to catch images of these animals is by snorkeling—in this way, a strobe is redundant. Additionally, images captured without a strobe are clearer than with one.
 Even in the clearest water, you will always find particles that will reflect the strobe light. Also in wreck and landscape photography, you can often skip the strobe if the distances to the subject are not too great. Images don’t get more expressive (color rich) under water, because the red color disappears already at three meters distance anyway.
 Image techniques for under water daylight images are no different from those used above the surface. But ideally, an underwater photographer should only work with two kinds of exposure techniques: manual or shutter priority. These are the only ways which allow you to adjust the shutter speed according to the movement of the subject.

Download the article to read the full story â–ș Illumination
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