10 out of 10 for trying John, but I think it might be time to quit now.

For whatever reason, I think you'll have to accept that you are not likely to sell your lens here, and try and sell it elsewhere.

At least leave it a week or two between bumps. A day or two between 'prods' is a little too often for me and perhaps others.

You're welcome. I find the best way to adjust the eyepiece diopter is to remove the lens and look through the viewfinder at an evenly lit light coloured wall whilst making the adjustment on the diopter slider. All you are trying to achieve here is to get the black markings on the focusing screen in focus. Essentially you are adjusting the viewfinder optics to your eyesight to help you stand a reasonable chance of getting a manually focused shot in focus, that's all, it has no effect on the cameras auto focus capabilities.

Then refit the lens and carry on shooting.

Welcome Jason.

First, read the manual.

Next, adjust the eyepiece diopter.

Next, set the focus point to centre spot and exposure mode to Av.

Set an aperture of around f8-f11, ISO as low as you can and no higher than 400 (for now). In daylight, take a shot or two with the main subject more or less in the centre of the viewfinder.

If you are shooting RAW, the images will need a bit of sharpening in post processing so best stick with JPG for now. Increase sharpening if necessary in-camera.

If you still can't get sharp images, I'd be surprised.

Enjoy your camera.

Unfortunately Pentax has not made the correct file available in the download. V4.35 is what you get.

Curious then, that the SilkyPix V3 software listed for the 'Q' is the full installable version. I can't get it to open anything though, neither .PEF or .DNG.

The only other thing I would suggest is to load a fresh set of batteries, download the latest firmware for your model and reflash it, then try again.

If you get the same results, it's off to the camera hospital I think.

Try removing the lens and clean the electrical contacts on both lens and camera.

Use a lint free cloth wetted with a little Isopropyl Alcohol (IPA).

Refit the lens and try again.

If you have another lens, try that too.

This was a problem I mentioned to SRS (Chris) when I bought my K5 and I thought it was a problem with my camera. Having checked others in the shop and found them to be the same, we put it down to a 'design feature'.

The card fits more tightly in to the slot on the K5.

I still find it more difficult to extract the SD card from the K5 than I do the K20D.

Yes.

I don't understand why you wouldn't be able to remove the lens, they only screw in to the adapter after all. Getting the adapter off of the camera can be troublesome if it's a tight fit, but not impossible.