This particular lens is especially made for a Distortion Free Image due to a sophisticated lens formula which produces a resolution power of *350-line at center. Mounting thread is 43mm. Front filter size is 72mm. Nominal 0.66X(Actual 0.66X/diagonal, 0.66X/center). Size/Weight : 75mm x 39mm 178g Click Here to visit the Raynox Page with camera compatibility information. | 
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