I had many happy times with my K-5. A couple of years ago, I bought a K-3, which presented me with a bigger learning curve than I had with the K-5. But, the one issue I have been having the biggest problem with is being able to use my Sigma 150-500mm lens. It is the last issue before Sigma discontinued it.
It has worked fine with my K-5, but the autofocus does not work with the K-3. When I press the shutter half-way to focus, it goes to the close focus, no matter how far away the subject is. I've had to resort to always using manual focus when mounting it on my K-3. But, it sure was nice to have that feature when I was in situations where I was panning with a moving subject.
Has anyone else encountered this problem? And if you did, what kind of fix did you find, if there was one?
Thanks