Sea & Sea M82 Internal Correction Lens
This M82 internal Correction Lens fits Canon EF 16-35mm F2.8L II USM. When used with a 77mm diameter wide-angle zoom lens, the lens corrects image aberration and distortion*. The lens helps reproduce clear images when mounted on a compatible lens for interchangeable lens cameras (full-frame SLR cameras).
Helps rectilinear lenses have sharper corners, in smaller domes particularly.
* Field curvature and distortion are rectified by approximately 2 f-stops value.
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