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I need any info on the canon 300mm f/1.4 L USM lens. I trying to buy a used one but can't find any reference to it on any web sites

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There is a Canon 200mm F2 lens, and a Canon 300mm F2.8 lens, but no 300mm F1.4 that's a normal, production lens. In the back room at Canon, Inc. maybe, but not for the general public. If they DID make one, you could expect to pay MAJOR money for it- in the range of $20,000-$30,000.

Posted on Jul 15, 2009

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Trying to find on-line instruction manual for Canon EF 75-300mm f/4.0-5.6 IS USM


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Canon EF 75-300mm f/4-5.6 III USM Lens Auto focus motor keep working back and forth but lense is not able to stop on focus right. Had eror 01 also sometime with manual focus.


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Looking for a manual


I coulnd't find a manual. I did see a detailed specification page here:
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&fcategoryid=150&modelid=9996#DownloadDetailAct

It shows no manual is available for the lens.

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New Camera


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Try cleaning your lens contacts with a soft cloth or pencil eraser. you should see 7 pins on the camera body and lens.

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I have a Canon EF 300mm f/2.8L USM Lens


Here is a link to many Canon products in PDF form: Canon Parts Lists


Unfortunately, the only 300mm 2.8 lens listed is the IS version

The procedure is not that complicated, but you need to pay attention to the connections on the circuit board. The mount is removed, and you need to remove the small screws that hold the connector board to the mount ring first.

I cannot do live chat due to I use a Mac, but I will monitor the thread if you have questions,

Kevin

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