i bought this from adorama within the past 12 months and the image isn't sharp……does this lens need to be redone by the mfg?
I purchased mine few months ago and it was decent but no perfect. First thing I did, I tested on my camera (A580) and called Tamron services. They told me to send it in and write a note with the issues. I got it back within a week (east coast) and it is been great since. It is very sharp wide opened up to 18mm. Then needs to stepped up to F5.6. It is getting weaker from F11 in any aperture.
I tried Sigma and it was awful!!! Tamron is always the best choice for Sony for obvious reasons.
I hope this helps.