Originally posted by Tony ... it could very well be the camera. You said yourself it is not easy to verify focus with a wide 14mm lens at 2.8 and thats why i asked if you had tested at f4 on the Tamron.
Not quite getting the logic. At a smaller stop the error is still there, you just don't see it as clearly.
The camera is not on my list of suspects.
Originally posted by ankit Are you getting a replacement soon, or do you have to send it in to Tamron for recalibration etc? You could try adjusting front-focus/back-focus with the debug firmware on the K10D (though that might completely mess up your other lenses).
Got the lens Friday afternoon so I haven't been in touch with the store yet. Recalibration or replacement it has to be, either one is fine with me, replacement is quicker of course.
What's this debug firmware ? I now the K20D has a provision for individual lens AF calibration, but for the K10D it's unknown to me.
And, again – the 17-50 is great when it's in focus. Just make sure from the start that it works, preferably by testing.
Back focusing is something you will blame yourself for, front focusing is something you will blame the optics for because nothing is quite sharp.