opaque object Retroreflective With polarizing Long sensfilters (Note 2) ing range CX-491 CX-493 CX-491-P CX-493-P 5m 3m (Note 3) (Note 3) Ǿ50mm or more Ǿ 50mm or opaque, translu- more opaque cent or specular or translucent object (Note 3) object (Note 3) Diffuse reflective Narrow-view CX-424 CX-42.