Quote:
Originally Posted by Cheddarchick
I want a wide angle lens to go with my PT30. I have looked at this one, Sea&Sea 16mm lens. How do I mount it on the housing? I assume I have to use a step up ring, right? What is a bayonet mounting??? Is it for ease for taking off and on underwater??? Thanks for your help!!!
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I believe the Sea & Sea 16mm lens is for cameras like the old 35mm Nikonos and Motormarine.
There are several brands that have "wet" lenses that simply screw into the thread on the camera lens itself. A "wet" lens is a lens that can be taken off underwater. The wide angle most common thread size is 67mm and they have setup rings to screw the wet lens onto smaller camera threads. Olympus(UN), Inon are some of the brands that make them.
I had a UN wide angle on my Olympus c7070 before I went to a digital SLR. Actually I dont think that ever took it off. I even used it on macro (wide angle close ups) with great success.
Thing to look out for is bubbles trapped between the wet lens and camera (from entering the water). All you have to do is unscrew the wet lens and remove the bubbles and screw it back on. Also care should be taken when screwing the wet lens on, to stop any crossthreading. It should just screw on easlierly.
After diving care should be taken with the washing and drying of the wet lens as the coating they have on the front of the lens tends to be removed if water (salt/ fresh) is left on for a amount of time.
I remembered my first shots from using my wide angle wet lens. It was a bad VIS day and when I downloaded the shots onto my computer it look like I was diving in much clearer water than it actually was.
I highly recommend the wide angle wet lens for any compact point and shoot.
I dont like the macro wet lenses as they tend to blur the edges of the frame.
Aussie