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Old 25th December 2016
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Re: EX-25 cannot be used in multiples

Originally Posted by alfbranch View Post
Also why does it need firmware and electronic circuitry.
The firmware was updated to 1.1.
The circuitry so that the lens can communicate with the body, the firmware so they can communicate better presumably.

I seem to remember someone one coming up with a workaround in the past but IIRC it involved some rewiring.

You can't stack the EC tele-converters or even the EX-25 with one of the TCs if you want AF. I'm not sure if you can use the focus by wire when any of them are stacked.
It's the image that's important, not the tools used to make it.

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