older extenders, what to do?

Started Apr 7, 2012 | Discussions thread
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chironNYC OP Senior Member • Posts: 2,253
Re: older extenders, what to do?

Yes. The answer seems to be that between the original 2X and the 2X III, there are some real differences, but you lose a lot of quality with either.

Between the 1.4X II and the 1.4X III, there are only small differences in CA unless you are using the supertelephotos wherein focusing advantages from the III version kick in.

Kjeld Olesen wrote:

Yes, that was the one I recalled, but couldn't find again

Just recall that the result refer specifically to the 200/2.8 L. For other lenses the results could be different.


chironNYC wrote:
Thanks. Your link led me to the following, which was perfect for my purposes:


Kjeld Olesen wrote:

Some info here

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