Pentax smc DA* 60-250mm F4.0 ED (IF) SDM
Pentax smc DA 60-250mm f/4.0 ED (IF) SDM Lens Review
By: What Digital Camera (Feb 19, 2013)
Overall this is a very capable lens but it is also a costly one. Photographers who genuinely need its f/4 constant maximum aperture and weatherproofing measures will doubtless be willing to invest in a lens of such quality but others may rightly hesitate. More importantly, potential buyers who are using older-generation Pentax digital bodies should definitely check the zoom's performance on...
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