The best STAR D-FA Pentax lens built to date for all generations as of today? With its bi-concave front lens, this lens enters the very closed circle of lenses with exceptional formulas such as the Zeiss Otus at € 4,000. Except that it is autofocus and takes advantage of the ISIS / SR of Pentax DSLR OVF cameras. It is a monster in every sense of the term where priority is given to quality versus maneuverability, like many optics released in recent years. In fact, the lens is heavy, bulky, and its setting point is probably not as pleasant as with a Leica-R optic I own…
Whatever tests come, apart from lens centering defects, the probability that it will be exceptional leaves little room for doubt. Especially since the K-1, despite a 36Mp Sony sensor (derived from the Sony A7R) "dated" for several years, but in Pentax sauce, remains in my eyes the best of FF OVF / EVF format until day with interchangeable lenses…
Just for that, both for the qualities of the body and the lens combined, the couple deserves to be in the bag of any photographer who seeks perfection, whatever brand he is a fan of…
In truth, I don't see any FF system capable of competing when the needs are very specific with the Pentax K-1 / HD PENTAX-D FA★85mmF1.4ED SDM AW couple. They justify their purchase alone.
Bravo Pentax!