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09-15-2010, 04:48 AM   #16
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With bodies seemingly improving by a stop every year, the new K-r or K-5 should turn a humble DA 55-300 into an F4 (ish) equivalent compared to a K-x or a F2.8 (ish) compared to to a K20. Unless you require the DOF control, I'd go for the cheaper, smaller lens.

The only problem is it hunts like a crazed electric pepper grinder if you're shooting moving objects.


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