Attached is a photo from a recent trip to Seattle. I was experimenting with Topaz Labs' black and white filter, although my normal favorite is Silver Efex 2. I really liked how the lines and space-age curvature of the architecture are made more stark with less color. The camera is the K5, and lens is the 50-200 zoom. I like this combination because I can easily set it in my pocket, or hold it attached to my wrist, and it is not as formidable-looking as my Nikon D300s with the battery pack. People don't notice quite as much, and my wife is willing to use the Pentax.

At Adorama, the items are http://www.adorama.com/PX50200AFWR.html and http://www.adorama.com/IPXK5.html .