Archive 2005 · Contacts pinout info on Canon EF/EF-S lenses?

iamnemo
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p.1 #1 · Contacts pinout info on Canon EF/EF-S lenses?

Does anyone know what is the pinout assignment of the contacts on Canon EF and EF-S lenses, i.e. what is the function of each contact?

I don't want to reverse-engineer the mount but I am curious

Thanks for any info/link. Regards, Iam

Dec 30, 2005 at 07:12 AM

iamnemo
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p.1 #2 · Contacts pinout info on Canon EF/EF-S lenses?

To answer my own question: I have found several links with many details, let me know if anyone is interested here. Iam.

Edited by iamnemo on Dec 31, 2005 at 03:00 PM GMT

Dec 31, 2005 at 11:49 AM

Beni
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p.1 #3 · Contacts pinout info on Canon EF/EF-S lenses?

I wouldn't mind knowing...

Dec 31, 2005 at 01:46 PM

iamnemo
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p.1 #4 · Contacts pinout info on Canon EF/EF-S lenses?

Ah, one cusious mind

The hard part is figuring out the protocol

Here you go:


	http://www.canon.com/camera-museum/history/canon_story/1987_1991/img/densi_l.gif

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=00B3Y8
http://photo.net/bboard/q-and-a-fetch-msg?msg_id=00CoLN
http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=005nXu

And:

http://www.novoflex.de/english/html/macro_accessories.htm (I have one of these)
http://www.birger.com/Merchant2/merchant.mvc?Screen=ef232_home
http://forums.dpreview.com/forums/read.asp?forum=1027&message=12059079

If you find anything else please let me know. Iam.

Dec 31, 2005 at 02:11 PM

bbgobie
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p.1 #5 · Contacts pinout info on Canon EF/EF-S lenses?

Haha... we should start a Canon body donation depot. Where all old Canon bodies will be used to research.
=)

Dec 31, 2005 at 02:46 PM

iamnemo
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p.1 #6 · Contacts pinout info on Canon EF/EF-S lenses?

bbgobie wrote:
Haha... we should start a Canon body donation depot. Where all old Canon bodies will be used to research.
=)

Or I could splice my Novoflex EOSRETRO cable and connect it to a digital logic analyzer

http://www.novoflex.de/english/assets/images/14b1.jpg
http://www.novoflex.de/english/assets/images/14a1.jpg
Iam

Dec 31, 2005 at 02:52 PM

iamnemo
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p.1 #7 · Contacts pinout info on Canon EF/EF-S lenses?

You might be interested to learn (as I did today) that people are building their own poor man's version of the Novoflex EOS auto-reverse adapter:

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=007m6Z&unified_p=1

It looks like this:


	http://www.photo.net/bboard-uploads//007mKz-17190184.jpg

Happy New Year!

Iam

Jan 01, 2006 at 12:49 AM


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