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Auto Focus Issues on R7 with Tamron 18-400mm

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sonoma03 New Member • Posts: 3
Auto Focus Issues on R7 with Tamron 18-400mm

I recently bought the Tamron 18-400mm EF lens for my EOS R7 and I'm finding it has lots of auto focus issues.  Even in bright sunlight, it often hunts and cannot focus on anything.  Other times it thinks it has focus lock but the photo is blurry and out of focus.  At other times it seems to work okay.  I have mostly been using it at 300-400mm zoom since that's why I got it.  Does anyone else use this lens with their R7?  Do you have the same issue?  I'm wondering if the lens is defective and needs to be returned.  Thanks!

Canon EOS R7 Tamron 18-400mm F3.5-6.3
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