Of course, its been hashed out a lot in here over time, but while the cropped sensor only captures the equivalent FoV of an 85mm lens at 58mm, it still doesn't give the equivalent magnification. If you don't care about that, get a 50. If you actually want the depth of field you'll get from the 85 (and its inherent subject/background seperation sweet spot) you still need an 85.
I ordered the Zeiss ZK T*85/1.4. In fact, I'm very impatiently awaiting the phone to ring any day here. At todays used prices for 85's, this Zeiss is actually competitively priced. And to derail the inevitable "it scored lower than the A*85/1.4 in an MTF chart, wide open at close range" - I know, I read that too. After I saw the Nokton 'suffer' similarly (I
love the dreamy effect at this aperture with the Nokton), I was compelled to buy the Zeiss 85
because of this feature
Anyway, to tie this in, its not a Pentax, its not 'cheap' nor auto-focus, but it
is competitvely priced for an available 85 of the highest quality (with full 'A' functionality).