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paulfree17

Montville, US
132 posts

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paulfree17 Silver Member Nikonian since 15th Jul 2009
Wed 26-Sep-12 03:39 PM

I shoot a D7000 and my primary walkaround lens is the 18-200 f3.5-5.6 lens.

I have been to a number of workshops with some serious photographers who swear by fast constant aperatue zooms like the 70-200 f2.8 or the 200-400 f2.8 which is way out of my price range.

My question is this. Since my current lens already covers the 70-200 range what is the benefit of that one extra f stop in going from 2.8 to 3.5 at the short end? Or the two extra stops going to 5.6 from 2.8 at the 200mm end.

I do realize that I can't use a 2x extender on the 18-200 but outside of that is there a legitimate reason for me to invest 2K plus for that 2.8 constant aperture?


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