I recently discovered the work of the great Yousef Karsh and this particular quote immediately struck my attention.

Compromise sometimes must be the stuff of which pictures are made

Wise words indeed. When you think about it further this is so true. If not the focal length you have, its the iso performance of your camera, if not, then the way it handles, and so forth. Luckily, with the K5 IIS very few compromises come to mind. The set below was processed with a few forked versions of the presets from Really Nice Images which I highly recommend. Check this post for a 20% savings coupon. Cheers.
All photographs by Jorge Ledesma ― Pentax K5 IIs ― Pentax SMC-FA 31mm f/1.8 AL Limited ― click to view as a gallery