Ricoh’s recently announced Pentax K-3 Mark III DSLR, the brand’s flagship camera APS-C DSLR, features an optical viewfinder, an AI-assisted subject recognition technology, and a 25.73-megapixel BSI sensor with ISO sensitivity up to 1,600,000. The sensor is coupled with an AA-filter-free optical design to produce what Pentax calls “super-high-resolution images,” …