Pentax K-r 10x High-Definition 2-Element Close-Up (Macro) Lens (77mm)

High Definition (Beveled Design) +10 close-up (macro) lens designed to convert your lens for high-magnification work. Built from High-Index / Low-Dispersion optical glass in a 2 Element configuration for improved sharpness and reduced chromatic aberration. Optical surfaces are Fully Multi-Coated and treated with an Anti-Reflection Coating; the unit is threaded for mounting. Easily attaches to the lens listed in the title.