The PENTAX K-3 Mark III builds on the PENTAX legacy of outstanding image quality, incorporating a back-illuminated CMOS image sensor with approximately 25.73 effective megapixels. By coupling this sensor with an AA (anti-aliasing) filter- free optical design, the camera produces super-high-resolution images. 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, the viewfinder provides a wide field of view equivalent to that of a full-frame SLR, fully immersing the photographer in shooting. It features a high-performance, five-axis shake-reduction (SR) system and the innovative Pixel Shift Resolution System. The camera’s PENTAX Real-time Scene Analysis System, supported by the latest artificial intelligence technology, assists the camera in optimizing exposure settings and improving autofocusing accuracy, assuring more accurate subject detection and more reliable scene judgment. The high-definition 3.2-inch touch-screen LCD monitor—the first touch screen in the PENTAX K series, improves efficiency and operability. Its compact, rugged dustproof and weather resistant body makes it suitable for use in the most extreme environmental conditions.