| Well, one thing for sure, the DA* has SDM, which will focus faster and quieter. From what I've seen, the tammy is quite soft wide open. I don't know about the DA*, but some said theirs are sharp wide open. It all depends on how you define the level of sharpness. If you think your DA* is soft, then switching to the Tamron might be a good idea since you have longer range. It's better to just get the Tamron and compare the two. |