Originally posted by krishna Thank you for your quick reply.
I had been doing a research on the following lens for a long time for my Pentax K-x:
- Pentax SMC DA 55-300mm f/4-5.8 ED
- Tamron AF 70-300mm f/4.0-5.6 Di LD Macro Zoom Lens
- Tamron AF 75-300mm f/4.0-5.6 LD
Just for my information, how about compatibility with older Tamron AF 75-300mm f/4.0-5.6 LD lens?
Most reviews states Pentax 55-300 having an edge over Tamron 70-300.
If you're going to buy a Tamron, get the Di version. I cannot say that it's better or worse than the Pentax because I've never owned the 55-300 (and probably won't).
THESE are taken with my copy on the K7.. The file title gives indication of the focal length and there are a couple macro test shots as well.
THESE were taken with the same lens (except the squirrel shot) on the K10d. Exifs should be in tact.
SR works fine with the lens. You only need to worry about Inputting a focal length with a Manual lens (M42, K, M, A type manual focus lenses).
Good luck..