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New Contributor
Posts: 4
Registered: ‎01-15-2020

Re: do new AF lenses work with older AF film camera

good news, cleaning the contacts did the trick, it is all working well for a trip back to 1980

Reputable Contributor
Posts: 786
Registered: ‎01-25-2018

Re: do new AF lenses work with older AF film camera

Well, your weekend is off to a good start then Scott.  Well done!

 

Rodger

EOS 1DX M3, 1DX M2, 1DX, 5DS R, 1D M2, EOS 650 (film), many lenses, XF400 video
Esteemed Contributor
Posts: 3,702
Registered: ‎02-17-2016

Re: do new AF lenses work with older AF film camera

8P to all of you! 8^)

 

 

VIP
Posts: 12,081
Registered: ‎12-07-2012

Re: do new AF lenses work with older AF film camera

"...cleaning the contacts did the trick, it is all working well ..."

 

Cleaning the contacts or mounting and removing the lens a few times?

EOS 1DX and 1D Mk IV and several lenses!
Honored Contributor
Posts: 5,218
Registered: ‎06-25-2014

Re: do new AF lenses work with older AF film camera


@ebiggs1 wrote:

"...cleaning the contacts did the trick, it is all working well ..."

 

Cleaning the contacts or mounting and removing the lens a few times?


And the difference is ?

Bob
Philadelphia, Pennsylvania USA
Esteemed Contributor
Posts: 3,702
Registered: ‎02-17-2016

Re: do new AF lenses work with older AF film camera

Cleaning with a mild abrasive or solvent can remove the dried caked-on oil and varnish that the wiping action of lens attachment/detachment can not. 

VIP
Posts: 12,081
Registered: ‎12-07-2012

Re: do new AF lenses work with older AF film camera

"And the difference is ?"

 

Finding out whether a manual cleaning helps or isn't really necessary. That's the difference!  I am leaving it open to, it is  possible in certain situations it does. However, in the vast majority it doesn't.

 

 

EOS 1DX and 1D Mk IV and several lenses!
VIP
Posts: 12,081
Registered: ‎12-07-2012

Re: do new AF lenses work with older AF film camera

"Cleaning with a mild abrasive or solvent ..."  Smiley Surprised

 

This is false and stupid and totally wrong.

 

Anybody reading this post should absolutely disregard it.  Nothing abrasive should ever be used on either the lens contacts or the camera's contacts. The contacts are plated with very thin gold that can be removed or destroyed if not done correctly.  Using an pencil eraser will actually remove the gold from the contacts making them less conductive, or not conductive at all, and even potentially damaging them. The gold is not getting oxidized. If you must do it, do it correctly or not at all.

A qtip and a drop or two of alcohol.

EOS 1DX and 1D Mk IV and several lenses!
Esteemed Contributor
Posts: 3,702
Registered: ‎02-17-2016

Re: do new AF lenses work with older AF film camera

Nonsense, As I said above, a white pencil eraser should be fine in limited - such as bringing a 20 year old lens back to life - circumstances.

Highlighted
VIP
Posts: 12,081
Registered: ‎12-07-2012

Re: do new AF lenses work with older AF film camera

The "nonsense" is all on you, my friend.  Here is what Canon says.  

Canon recommends 

 

You didn't notice a pencil erase anywhere did ?  You, and anybody, can goggle cleaning the lens contacts and no where will you find a single person, except you, Mr Nonsense, that will advise using a pencil erase.

EOS 1DX and 1D Mk IV and several lenses!
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