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tomcook · 08-29-2018, 05:29 PM

Is it possible to modify an off-brand teleconverter so that it sends the adjusted focal length for shake reduction and exit data?

stevebrot · 08-29-2018, 05:34 PM

No, the focal length information is polled from the lens by the camera using the "data" contact on the mount. Non-AF lenses lack this contact. A brand-X TC may have the contact, but you would still need a chip to wire to it to spoof an AF lens.

Steve

08-29-2018, 05:29 PM	#1
tomcook Senior Member Join Date: Dec 2007 Photos: Albums Posts: 125	Modify off-brand teleconverter Is it possible to modify an off-brand teleconverter so that it sends the adjusted focal length for shake reduction and exit data?

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08-29-2018, 05:34 PM	#2
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	No, the focal length information is polled from the lens by the camera using the "data" contact on the mount. Non-AF lenses lack this contact. A brand-X TC may have the contact, but you would still need a chip to wire to it to spoof an AF lens. Steve

Modify off-brand teleconverter

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