Hi All,
I'm having an issue with my K5 using a Tamron 28-75 lens. I've had this lens for a few years and have used it both with my K5 and K20d and have loved it, however, it seems to have developed a strange focus issue. I noticed last week that I was losing a lot of shots. I was taking pictures of my daughter two days ago, and I lost them all, they are totally unusable. I tried recalibrating the lens with my Spyder Lens Cal and adjusted to what appeared to be a close AF adjustment - it's actually clear on -10 right now. I am getting reasonably sharp pictures, up to about 3 feet, but from anywhere from 3 feet or greater, it's out of focus. I tested my 70-200, and it's absolutely fine. I've used this set up for going on three years with little issues (this past year with my K5 and a K20d before that). I had some problems during the summer prompting me to get the Lens Cal, and after that, it looked great until last week. No matter what adjustment I'm making, it's very soft focus.
I've added photos to my flickr account. I messed up a little when I shot the k20d for comparison, it was at f3.5 and the k5 is in 2.8, I know it will make a little difference, but I just really need to know if it's time to get a new lens or if this would be worth trying to fix, and what it could be (maybe an internal lens slipped or something??). The titles of the pictures should let you know what I was shooting. Thanks!
Flickr: jenniferrd73's Photostream