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Canon Extenders II vs III

Started Jun 13, 2011 | Discussions thread
40d_dane Senior Member • Posts: 1,034
Re: Improved AF performance

Interesting...

I decided that the added microprocessor in the extender only makes sense if it improve on the performance of the older lenses (I don't think that the new mk II lenses would need much help from an additional CPU). So I have ordered a 1.4x mk III today. I spend so much time in my car driving to my favorite birding locations and sitting there waiting for my favorite birds to appear that I want to have the highest possible keeper rate - and at least for now I think the a new extender may be a step in the right direction. The money has been withdrawn on my credit card to I should have the extender before the weekend. I will be reporting my findings ... but probably not before sometime next week.

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