Pentax Zoom Normal-Telephoto SMCP-DA 50-135mm f/2.8 ED (IF) SDM 2x Teleconverter (4 Elements) + Nwv Direct Microfiber Cleaning Cloth.

描述

2x (Doubler) 4-element Teleconverter multiplies the focal length of any fine optic it's used with by 2x, maintaining the resolution and contrast at a high level.