These shots were taken with my workhorse lens, the Pentax FA43/1.9 Ltd. This lens first appeared in 1997 and is still in production today.
Having used a few 50mm primes I far prefer this focal length, 43mm gives a little more context to the shot and with the 7 elements you'll want to enjoy the out of focus areas as much as the in focus.
A gift received for my 40th. Super small, compact, reliable with unique rendering properties, I will never let this lens go.