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Message: <blockquote data-quote="BackdoorArts" data-source="post: 565798" data-attributes="member: 9240">3rd party lenses are always questionable with newer Nikons, which is why I haven't even put my Sigma on this copy of the D500.  It's just the 300mm f4 until I figure it out.  For backyard birding that's more than enough.Have you sent back the Sigmas for firmware upgrades since getting the D7200?  I had to send back all of mine when I got the D750.  I'm waiting a while before I send back anything so they can get everything sussed out with the D500.  I can do the 150-600mm with the dock but the 105mm macro and 70-300mm macro need to go to them (these have obvious issues in Live View focusing, which I will use for macro).  I haven't noticed an issue with the 15mm fish.</blockquote>