Originally posted by BarryE Guess you may have accounted for vibrations, but I was surprised by how vulnerable this lens was and how unpredictable the vibrations were.
Thanks for that note. I'll keep that in mind. In this case the lens was back focused so much nothing was in focus. My calibration tests were done inside on a tripod with a remote trigger. I did enough repeats I am comfortable with the results. If it was +9 I would not worry at all. But at +10 there is a little doubt that maybe I don't have it all the way centered.
Originally posted by bdery The one I used for the review was working fine out of the box, with no adjustments needed.
Thanks, I was quite shocked to see it that far out, and the first one could not be brought into focus at all. Most of my other lenses have been very close to perfect on the K-1. I actually thought maybe the K-1 had been knocked out of alignment so I rechecked an assortment of lenses but they all seem to be quite close to the settings I made for them before.