Wide conversion lens enables you to shoot wider area and also reduce minimal camera distance, and supports wide variety of wide shooting scene such as scenery shooting or wide macro shooting.
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UWL-100 Achromat Type1/Type2
Max. view angle 100.5˚ underwater and 158.3˚ on land. M67 screw fit. Two options (Type1/Type2) for various camera type to bring out optimum performance of master lens.
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Shooting your subjects from short distances help you get sharper and vivid images. Because the amount of water you must shoot through lost image quality. Wide conversion lens lets you shoot wide area from short distances.
Wider lens enables you to shoot
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wider underwater landscape
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group photo with more divers in clear image
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bigger subject like manta in single image
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bigger subject in clear image for closer shooting distance
without Wide conversion lens
with Wide conversion lens
Why we stick on underwater attachment lens?
When we bring a conversion lens, especially wide conversion lens for land use, underwater, we have to use a dome port to waterproof the lens. However a dome port underwater works as a concave lens and affects on perfect optical system causing apparent change on shooting conditions/image quality like longer minimum focusing distance, blur on periphery part of an image. Needless to say, it is too much to hope aberration correction. If the dome lens is manufactured without profile irregularity management like blow molding (glass/plastic molding technique like filling a balloon), it is as like putting ripply concave lens in front of optical system and rather difficult to get high quality image.
In contrast, underwater conversion lens can be constructed with all optically designed elements including front side lens. In addition to optical design, high quality material and molding technique to manufacture underwater lens can eliminate all drawbacks of the combination of a land lens and a dome port.
Does it make sense why we stick on underwater attachment lens?
