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Topics - lescrane

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Lenses / Question for Owners of early run Tamron 150-600 lens
« on: September 13, 2014, 03:22:31 PM »
I read posts on various sites about Tamron 'fixing' autofocus problems by replacing a chip and firmware. Is this true or not? Has anyone here sent back their lens for this?

I got my lens with the first shipment in January.  Generally it  focuses fine on my 70D.  Have had some problems acquiring BIFs in low contrast settings but a)am not an experienced BIF photographer, still have only done this occasionally  b)not sure if this is 'normal' doesnt seem much different than the 100-400's I used to rent

Any feedback would be appreciated.  I don't want to send the lens back for no reason.

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