D810 with sigma 150-600 contemporary focus issues

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Philhenley30 New Member • Posts: 1
D810 with sigma 150-600 contemporary focus issues

Hey y’all!

I recently bought a sigma 150-600 contemporary to pair with my Nikon D810. I love it, but I’ve had one recurring problem with it. About half the time I use it, the autofocus doesn’t work when using the viewfinder. When I use the LCD screen it works just fine, but if I’m looking through the viewfinder it will cycle through the entire focal range, but it never actually focuses. Is this a common problem? Does anyone have experience with similar issues? Any insight would be greatly appreciated! Thanks!

Nikon D810
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