canon 85mm f1.2 II front element issue

hao

Jan 21, 2015
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0
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Hello everyone, I am really new to photography,,,have just bought myself a camera lens from second hand shop, it is a canon 85mm f1.2 II, it looks quit clean and work same as the other lens( really don't know what to check in order to make sure it works right), the only thing that I just notice is the "grove" on top of the front element has scratches, does it mean the lens has been opened by someone, or it could on there when it came out of the factory.
Should I get it returned or just don't worry about it.
Does any third party company can manufacture the element for this lens other than canon?
Thanks for all the advise.
 

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