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<blockquote data-quote="Danno_RIP" data-source="post: 566851" data-attributes="member: 34269">[USER=9240]@BackdoorHippie[/USER], I contacted Sigma as you suggested about my preview staying on with my one lens.&nbsp; I know it is the D7200, but I thought you might find the response interesting.&nbsp; &quot;Thank you for contacting Sigma Corporation of America.&nbsp;This behavior is related to the specifications of some of our OS lens when it is used with D7200. It is one of the features of some of our lens with OS function that it stays in communication with the camera body after D7200's auto-off operation. Please note this will not cause any malfunction to the camera body, and you can keep using our products without any worry. As long as we have investigated, such lens operation is only identified with D7200. Therefore, it is assumed that the functionality of D7200 might be different from conventional cameras. It will be very much appreciated if you could also understand it is one of the features of some of our lens with OS function, and it is a sign of normal operation of the lens. Thanks for your kind attention and understanding.&nbsp;Although this is normal behavior your lens may still need a firmware update if you are having issues with focusing in live view or issues with the OS. Please send the lens to our office in Ronkonkoma, NY for a free firmware update.&quot;I am going to send the lens in for a firmware upgrade.&nbsp; It appears that the lens OS system communication is part of why my preview stays on only with the Sigma 18-250.</blockquote>

[QUOTE="Danno_RIP, post: 566851, member: 34269"] [USER=9240]@BackdoorHippie[/USER], I contacted Sigma as you suggested about my preview staying on with my one lens. I know it is the D7200, but I thought you might find the response interesting. "Thank you for contacting Sigma Corporation of America. This behavior is related to the specifications of some of our OS lens when it is used with D7200. It is one of the features of some of our lens with OS function that it stays in communication with the camera body after D7200's auto-off operation. Please note this will not cause any malfunction to the camera body, and you can keep using our products without any worry. As long as we have investigated, such lens operation is only identified with D7200. Therefore, it is assumed that the functionality of D7200 might be different from conventional cameras. It will be very much appreciated if you could also understand it is one of the features of some of our lens with OS function, and it is a sign of normal operation of the lens. Thanks for your kind attention and understanding. Although this is normal behavior your lens may still need a firmware update if you are having issues with focusing in live view or issues with the OS. Please send the lens to our office in Ronkonkoma, NY for a free firmware update." I am going to send the lens in for a firmware upgrade. It appears that the lens OS system communication is part of why my preview stays on only with the Sigma 18-250. [/QUOTE]

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