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06-19-2010, 11:00 AM   #1
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Which zoom to keep?

I just upgraded to the K-7 and it came with the compact WR 50-200 lens which I like since it's a Pentax and keeps with the WR on the body.

The problem is that I also have a Tamron 70-300 LD telemacro that's gotten good reviews on both the sharpness and IQ plus it's slightly longer and can "close focus" so I'm having a bit of a hard time debating between which one too keep since they're worth about the same on the used market.

Are the two lenses comparable in performance that would negate the size difference? WR isn't a huge deal but I do prefer it just for peace of mind though. The other factor is I haven't had a crying need for the long end but only because I haven't shot much with it. I know the answer is likely to just do that and decide but one of them needs to go and I've already listed the Tamron for sale so if I need to make a hasty decision I'd like that it be at least halfway informed.

06-19-2010, 11:05 AM   #2
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i'll keep the DA 50-200.

Before I sold my non-WR copy for a 55-300mm, i was absolutely satisfied with the performance, the size, and just the overall feel and quality of the lens. I'm sure the WR version feels even nicer.

Sell both if Pentax ever releases a 55-300mm WR.
06-19-2010, 02:39 PM   #3
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The size advantage of the 50-200, the WR, and perhaps most importantly, quick shift - all these say to me, keep the 50-200. Get a Raynox 150 for $45 which gives the 50-200 *far* better macro capability than the Tamron. If you find 200mm not lpng enough, you can always crop, and if you've got at least 10MP to play with, image quality will be comparable.

Last edited by Marc Sabatella; 06-19-2010 at 09:58 PM.
06-19-2010, 03:01 PM   #4
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I'd keep both until I had enough experience to make a personally informed decision.

06-19-2010, 03:10 PM   #5
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+1 with newarts.
Cheers, Mike.
06-19-2010, 03:15 PM   #6
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it is odd that you ask about performance when you own both lenses

Personally I never used the Tamron so my opinion is irrelevant.
enjoy your shootout

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