I have been using the K&F Concept adapter on my Sony full frame to adapt my old Pentax lenses. Does the job well.

[CreationBear]

Good to see you posting again--I was worried you'd run afoul of some neo-Bogomilist conspiracy down there in N'awlins. At any rate, hope the Sony is working for you--I ran across an early report of the K-1, though, extolling its street shooting ability at waist level with the DA40 and articulating screen.

[oculus]

The K-1 looks like a fine camera, but not for my purposes. The phenomenal AF on the Sony has allowed me to capture some great action shots using the Sony/Zeiss lenses. The reason I stick with the Pentax 28mm for some street work is that Sony's 28mm offering distorts severely and renders color blandly. It also lacks a focus distance scale. I find the Pentax 28mm 2.8 to be an exceptional lens, especially given its size. Zeiss makes a 25mm for the Sony mount but it is (comparatively) enormous. I am developing some Tri-X this morning shot on a Pentax MX that I hope to post here if nothing goes wrong with the chemicals. That MX is a wonderful camera.Very portable and fun with the M lenses.