Canon EF 70-300mm f/4-5.6L IS USM

Dave Logan

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Dave
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Hi Guys
I need some of your experienced advice on the above lens.

While away on holiday last week I was cleaning the front and rear elements of the said above lens with my cleaning pen and noticed that the rear element was lose. I haven't dropped, knocked or banged it against anything and its transported very well when not in use. I've never used any converters with the lens and its only been used with my Canon 7D.

Can anybody shed any light on why the element has came lose and what I should do to rectify it.

Cheers Dave
 
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