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Forum: Pentax SLR Lens Discussion 01-30-2010, 05:41 PM  
I like my new smcp-a 400mm f/5.6 ...but... questions
Posted By b0bg
Replies: 2
Views: 1,423
So I brought home a new to me 400/5.6 this weekend and slapped it on the K7 for some test photos. First let me say its in excellent shape and I really think I'm going to like it despite running into some limitations I hadn't expected. I hope those with more experience than I can help clear things up. I had naively expected to treat this lens as an otherwise modern lens with MF as the only focusing option.

I had expected that since this is an A lens that I would have the ability to use all of the metering and focus point selections I can use with my other lenses. This does not seem to be the case. I was attempting to change the selected focus point, but this does not seem to be allowed. I was also surprised that I had to manually specify the focal length (perhaps I should not have been according to this: Summary of the K-Mount Evolution, Names, and Features ).

Should I expect other limitations using this lens? In any case I'm happy with the sharp performance and eager to improve my MF technique. I suspect this lens will provide a good opportunity to practice. =]
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