[Deal] lens turbo for pk nex p42181263

Original Price: US$ 272.40 Current Price: US$ 157.99 (Saving 58 OFF) Description: Brand new Zhongyi Lens Turbo II focal reducer speed booster adapter for Sony NEX camera. Suitable for Pentax K mount (PK) lenses. High quality metal made, precise and no play with camera and lens. Optical element made of glass. APS-C sensor has 1.5x cropping factor and automatically magnifies focal length of your lens in 1.5x. The adapter can reduce focal length of your lenses to 0.72x magnification, close to those in 35mm film format in APS-C sensor, e.g. 50mm x 1.5 x 0.72 = 54mm. It reduces image size, allows APS-C sensor to absorb more light, so you can use faster exposure time for shooting (in about 1 stop).