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Forum: Pentax SLR Lens Discussion
01-07-2017, 09:46 PM
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I was contemplating both these lenses at one point.
Here are some useful responses in this regard. https://www.pentaxforums.com/forums/190-pentax-k-1/333685-da-200-f2-8-k-1-samples-anyone.html
After owning both I realized thy have completely separate uses. D-FA70-200 is a beast and slightly shorter than DA*200 but more versatile and a portrait choice. DA*200 has tad bit of PF, more portable but you are stuck at 200mm. But my question was not considering bird shooting. For birds you absolutely need the rich. That means 200mm is short on K-1 as @normhead already mentioned. Look at 300/f4 or even DA55-300 isn't too bad on K-1 @300mm. You almost always end up cropping bird shots and the vignetting should be a moot point in that case.
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Forum: Pentax SLR Lens Discussion
01-07-2017, 04:33 PM
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From my personal observations it is not the lens that slows down focusing. Its the camera body. I have the da55-300 that works really fast on my K-x than on my K-5. I really did not want this to be true. But in reality I have more success of flying bird shots with K-X + DA55-300 thank with K-5ii+55-30. The new PLM may be different though and I have no experience with that new lens.
I did use K1+DA200 on my last trip to Florida. tried a few bird shots in AF-C but not much success. I think it just wants to keep focusing without yielding much.
DA*200 is a resolution monster on K-1 though. I was bleeped at how much it resolves on a K-1 for its size and weight. I debated buying the DA*200 over DFA*70-200 at one point.
But then I realized one cannot replace the other unless all my business was around 200mm FL.
I did not try K-x with DA*200 (recent purchase) though which I may the next time I am planning to shoot birds in flight.
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