I've now missed three days in a row, so I'm going to bow out and recharge the batteries for September. So I'll sum up now.
The K 200/2.5 is the fastest 200mm lens Pentax has ever made. Not surprisingly then, it is a big, heavy lump of glass. It has a 77mm filter and it's rather front heavy. Even on the K-1 and a Peak Design Slide sling, it was never a particularly comfortable carry. On the other hand, the retractible built-in hood is nifty, and locks into the fully extended position with a pleasingly soft click. The focus ring is very nicely damped, but despite its ridiculously long minimum focussing distance the focal throw is very long indeed. It is also not particularly sharp wide open, so manual focussing on a DSLR is not easy. Luckily the AF confirmation beep is nicely accurate, so that is a viable work-around.
Optically it is a nice lens. While there is a certain glow wide open, there is still plenty of fine detail in the images. Stopped down it is sharp enough for just about anyone. The teeny-tiny spider entombed in my copy was never an issue. Out of focus rendering is pleasing, but the old coatings do not deal with direct sun at all well. Chromatic aberrations were easily dealt with in Lightroom, but required a little more attention to detail than the usual single click with most modern lenses.
While I was overseas, I substituted the K200 for the more travel friendly FA 135/2.8. In stark contrast it is very compact, reasonably light and hast fast accurate autofocus, with a much more useful MFD. It competently handled even fast action in the at times extremely low light of the ship's theatre. Image quality leaves nothing to be desired - it is sharper at f/2.8 than the K200 and (to my eyes at least) the bokeh is nicer.
To be honest, I can't see myself keeping the K200. The FA135 is a definite keeper - it will make a particularly good partner to the K 28/2.0 and A 50/1.2 as they share the same 52mm filter diameter.
Last edited by Sandy Hancock; 08-26-2019 at 10:23 PM.