Ok.. Nicely done.
Here's a Spiratone 20mm f2.8 at about f5.6
I haven't done a lot of nature type shots with MF lenses other than flowers lately..
An A50 f1:1.2 got this one.
Something a little different. K28 f2.0
The whole point of course, and I think you and I both prove it, the K5 is more than capable of playing well with the manual lenses, of all flavors. Oh and by the way. The camera that took the last two with the K28 (in January), had a stained sensor. It was replaced in February. So even defective, the K5 still rocks.