Pentax K-3 Mark III Camera Body (Black)The Pentax K 3 Mark III builds on the Pentax legacy, incorporating a back illuminated CMOS image sensor with approximately 25. 73 effective megapixels. The camera produces super high resolution images by coupling this sensor with an AA (anti aliasing) filter free optical design. A new, super bright optical viewfinder delivers a nearly 100% field of view and magnification of approximately 1. 05 times. With a newly developed high refraction glass prism,