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<blockquote data-quote="nikonbill" data-source="post: 844097" data-attributes="member: 47024">Hello and welcome!I am suspecting the lens you have &quot;may/could&quot; be the culprit. I had a Z50 for over three years two lens lived on that camera both &quot;pumpers&quot; a 18/300 or my 200/500 zooms. Over my ownership I used a rocket blower one time. I would check to see if the suspected lens is &quot;weather sealed&quot; (even Nikon says weather sealing does not mean dust free).Clovishound brought several good points on handling during lens changes, I only change lens at home or at a hotel if traveling (having more than one body is key to that success). If any advise could be given just make sure you are in the best dust free environment when swapping lens. If you have more than one lens maybe you can &quot;test&quot; to see if the issue only occurs with the suspected lens. Once dust gets inside zooming with pumper zooms (lens that move in and out) redistribute it.&nbsp; Hope you enjoy your camera!</blockquote>

[QUOTE="nikonbill, post: 844097, member: 47024"] Hello and welcome! I am suspecting the lens you have "may/could" be the culprit. I had a Z50 for over three years two lens lived on that camera both "pumpers" a 18/300 or my 200/500 zooms. Over my ownership I used a rocket blower one time. I would check to see if the suspected lens is "weather sealed" (even Nikon says weather sealing does not mean dust free). Clovishound brought several good points on handling during lens changes, I only change lens at home or at a hotel if traveling (having more than one body is key to that success). If any advise could be given just make sure you are in the best dust free environment when swapping lens. If you have more than one lens maybe you can "test" to see if the issue only occurs with the suspected lens. Once dust gets inside zooming with pumper zooms (lens that move in and out) redistribute it. Hope you enjoy your camera! [/QUOTE]

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