Today was my first underwater photo shoot. I worked with the same model as Daylon did, but I'm far less professionally prepared. All I had this morning was a Pentax W60. Add to that that I am legally blind without my glasses. I found when I got home that I often did not have the camera pointed where I needed it pointed. I tried to do these shots in bright sunlight, because the Pentax W60 has poor low-light performance. The W60 exhibits image noise even in daylight mild shade.
Here are some sample shots:
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Here is one at full-wide angle on the Pentax W60 (28mm eq on a 35mm):
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Cropping in closer
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and closer
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You can see that the Pentax W60 has a lot of image noise in the cropped shots.
When I arrived home, I found that my underwater housing for my Canon 20D arrived. It's a neoprene plastic bag with velcro closures, rated to 5 meters. I look forward to being able to use my 20D underwater.