Originally posted by yoko666 but on K-70 the focus is only in the middle of the picture
Please elaborate. Are you saying that this lens on your K-70 is never in focus in the edges/corner or are you saying that you cannot use other than the center AF point? Something else?
Originally posted by yoko666 and i cannot help myself to enter into menu for LENS CORRECTION (it's all greyed out).
As with your K-30, lens correction is not available for non-Pentax brand lenses.
Originally posted by yoko666 Maybe i can help myself if i manually enter focal length of for the lens (currently is 55).
If you are allowed to enter focal length, the camera is not detecting your lens as being auto-focus. This is usually caused by poor connection at the data contact on the mount. You may want to consider lightly buffing the mount contacts on both body and lens with a microfiber cloth to remove any contamination.
Is this the only lens where you are having problems on the K-70?
Steve