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03-28-2007, 05:17 PM   #12
clm
Pentaxian
 
Location: Middle Tennessee
Gallery Photos: 3
Posts: 192
Not the Same

You are looking at the wrong lenses.
The expensive one is the SMC Pentax F 70-210/4-5.6 ED (extra low dispersion ). It has 13 elements in 9 groups and has SMC coating. I never had any of the others, so I don't know how much better the SMC version is.
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