Raynox HD-6600PRO55, 0.66x High Quality Wide Angle Lens, 55mm Mount

Distortion image at corners is common with wideangle lenses, but this particular lens is especially made for Distortion Free based on the sophisticated lens formula which produces a resolution power of *350-line at center. Mounting threads is 49mm. Front filter size is 72mm. Nominal 0.66x(Actual 0.66x/diagonal, 0.66x/center).Optional Sizes/Weight : 75mm x 39mm 178g * MTF 30%. Equivalent to 1890-line/TV(1/4" CCD),2520-line/TV(1/3" CCD).