Is it still available? What about warranty?

Sold. Thanks.

Yes, I've tried that. Also I've updated the firmware but nothing helped.

It applies to all lenses I've tried.

Thank you

Just done some tests. Indeed it looks like the darkness and the size of the spot changes with the aperture. With high number like f16 it's darker and smaller than with f4.

Yes, it's always in the same place but its size changes a bit with the focal length change.

For sale used Pentax k-5 with a lens and other stuff like box, cables, charger, 2 original Pentax batteries, manual, strap.

Looking for £300 for all the stuff.

Shutter count is less than 17 000. Everything works BUT there are few PROBLEMS:
1. There's a bit of dust particles under the screen
2. The lens produces a circle artifact on images as you can see on the sky picture in the top right corner
3. The most important problem is that the selected programs don't work properly if not in "live view" mode. (In "Live view" mode everything works fine) For example if I select Av, the shutter speed value is never selected properly. It always is the smallest possible value of 1/8000 s. I've used the camera in full manual mode (M) so it wasn't much of a problem for me.

Let me know if you have any questions.

Free app Exsate Golden Hour for golden and blue hour, moon phase and similar stuff.

Direct link to your portfolio: https://www.pentaxuser.com/user/lee55555-15090/gallery