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Ewa-Marine Video Wide Angle Lens
1. Water is a most effective filter for light. After only 5m (15 feet) the ray of light passing through water has already noticeably lost some of it's red spectrum and after 10m (30 feet) all red has vanished from the scenery. Yellow and green follow shortly as you descend. In other words, if a camera man wants to film an object 5m in front of him and 5m under water ( = 10m for that ray of light) the colours of that object will be dull and blue. No matter how colorful that little fish really was.... The solution: use as wide an angle as you can. The colours are right in front and around you. Give the standard wide angle of the camcorder some extra width with an additional adapter lens. 2. The border between air and water acts like a natural lens and makes objects appear closer then they are. In actual fact it eliminates the effect of your factory fitted wide angle by a factor of x0.7! 3. Water is a seldom clear medium. Sand, plankton and minerals suspended in the water obscure objects further from the lens and make them appear unsharp on the footage. 4. A diver rarely stands perfectly still in the water (and please do not touch those corals. It will kill them and spoil the fun of those who follow, including yourself next season!) It is therefore unlikely, that you will actually get that moving fish perfectly where you want him in the picture. The results of your work will only be the odd fin and lots of background... For this reason Ewa-Marine has developed the WW6 wide angle adapter lens. This product is ideally suited for underwater use and due to its very short length, will not only fit into most Ewa-Marine housings but into aluminum and poly-carbonate / Lexan housings of other manufacturers as well. (Specs: 80mm (3.15 in) diameter; 18mm (0.71 in) length; 58mm filter thread; factor x0.6) Contact us for "info" regarding your camcorder or camera before ordering! |
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