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Nikon DSLR Cameras
D750
D750 and Tamron 150-600mm soft
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<blockquote data-quote="Don Kuykendall_RIP" data-source="post: 573725" data-attributes="member: 6277"><p>The most critical part of fine tuning is going to be at the long end (600mm) so that is where you have to tune it. And 50x is where you need to be because that is the kind of distance you are going ot be using the lens. </p><p></p><p>50x600mm = 30,000mm or 30 Meters or 98.43 feet Just round that off to 100 feet. </p><p></p><p>Distance and a good target is most important. Also turn off VR and shoot wide open. Largest aperture will give you the least amount of DOF which will show you the focus more critically. </p><p></p><p>It is very hard for me to see the slight differences in focus on the camera or even on a monitor so that is why I went with a computer based fine tuning system <a href="https://www.reikan.co.uk/focalweb/" target="_blank">FoCal</a></p></blockquote><p></p>
[QUOTE="Don Kuykendall_RIP, post: 573725, member: 6277"] The most critical part of fine tuning is going to be at the long end (600mm) so that is where you have to tune it. And 50x is where you need to be because that is the kind of distance you are going ot be using the lens. 50x600mm = 30,000mm or 30 Meters or 98.43 feet Just round that off to 100 feet. Distance and a good target is most important. Also turn off VR and shoot wide open. Largest aperture will give you the least amount of DOF which will show you the focus more critically. It is very hard for me to see the slight differences in focus on the camera or even on a monitor so that is why I went with a computer based fine tuning system [URL="https://www.reikan.co.uk/focalweb/"]FoCal[/URL] [/QUOTE]
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Nikon DSLR Cameras
D750
D750 and Tamron 150-600mm soft
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