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Question regarding the Sigma and Tamron 100-400mm lenses on the D850 and D500
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<blockquote data-quote="snerkler" data-source="post: 669009" data-attributes="member: 44852"><p>I've just 'spoken' to a gent on Flickr who has the Tamron 100-400mm and he's advised me that if you use single point AF then the outer points don't work past 320mm which suggests the 100-400mm suffers the same fate as the 150-600mm which is disappointing. It would appear that Nikon have strictly limited the new AF system to f5.6 and won't let the f6.3 lenses work. Whether this is deliberate so that you buy Nikon lenses, or a limitation of the wider AF spread I don't know.</p></blockquote><p></p>
[QUOTE="snerkler, post: 669009, member: 44852"] I've just 'spoken' to a gent on Flickr who has the Tamron 100-400mm and he's advised me that if you use single point AF then the outer points don't work past 320mm which suggests the 100-400mm suffers the same fate as the 150-600mm which is disappointing. It would appear that Nikon have strictly limited the new AF system to f5.6 and won't let the f6.3 lenses work. Whether this is deliberate so that you buy Nikon lenses, or a limitation of the wider AF spread I don't know. [/QUOTE]
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Question regarding the Sigma and Tamron 100-400mm lenses on the D850 and D500
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