Wow!
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Pros:
High quality construction metal lens mount very quick auto focus much brighter viewfinder than the F4 version
Cons:
Tad heavier than the F4 Chinese version but better quality more than makes up for the weight.
Reviews:
I owned the 40-150 F4-5.6 version of this lens for almost 2 years and liked it except that the F4 aperture resulted in a dark viewfinder and the autofocus tended to hunt. I dropped that lens and so needed to find a used replacement. Bought this F3.5 version and can't believe th...
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