Originally posted by photolady95 I had a DA 55-300mm once, it had back focus issues, and I believe it had other problems as well. I returned it. I've seen the WR version in the marketplace lately but I'm not sure I'll buy one again after the first one had problems. My 70-300mm Sigma is f stop at 4-5.6 and the 55-300mm is f stop at 4-5.8.
The main reason I like the manual focus primes is I can attach a TC with one and still be able to focus. With zoom lens, and a TC they tend to hunt too much, even with a 1.4x TC.
I have an original copy of the DA55-300, and my copy is a great lens. That being said, I really enjoy using the K300 f/4. While the colors are more subdued than the 55-300, probably more realistic, it is extremely sharp and renders great images to work with. If I know I’m shooting longer and closer to 300mm is desired, I’ll grab the K before the DA.
I haven’t tried either with my TC, but that may be something I do soon. The majority of my current shooting can be accomplished with the 200 or 300, but I’d like to add a 400 to the mix one day.