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Old May 11, 2011, 10:46 AM   #1
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Default 70-200mm f/2.8 + 2x Extender (or) 100-400mm/F4.5

I have never used an Extender but I'm very curious to hear people's thoughts.

I've had the luxury of using the 70-200 F/2.8 and the 100-400F/4.5...

Aside from the zoom and extreme close ups on the 100-400 - I just loved the 70-200 f/2.8. What I'm curious to know is how would the 70-200 do with a 2x extender? What impact do extenders have (if any)? do they slow things down, are they more of a burden? or do they get the job done well?

Can I have the best of both worlds and then some with the 70-200F/2.8 +extender

All this would be mounted on a Canon 60D

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Old May 11, 2011, 11:15 AM   #2
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I guess part of the answer will depend on if there is a secondary (or primary) for the 70-200 F2.8. If you want to shoot indoor sports or other items that make use of the F2.8 then I might be inclined to use the 2X, but other wise I would go for the 100-400. I have only used the 1.4X extender and did not have a great experience (image quality was not what I wanted), others have used them with success. the 100-400 has good IQ and is more compact than the 70-200+extender. Steven
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Old May 11, 2011, 11:38 AM   #3
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The 100-400 will perform better than 70-200 2.8 plus 2x extender. Results will be sharper and focus will be faster. The 2x extender also turns the f2.8 lens into f5.6.

There really aren't too many people I've seen that stick with using a 2x extender on the 70-200 2.8. There's a pretty big drop-off in performance. 1.4x works much better (but there's still a drop in quality and a drop to f4) but not so much 2x.
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