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<blockquote data-quote="Fred Kingston_RIP" data-source="post: 762097" data-attributes="member: 10742">On the D750... Go to Menu F1 &quot;OK Button&quot;, then select &quot;Playback Mode&quot;, then select &quot;Zoom on/off&quot;, then select &quot;1:1(100%)&quot; and press the OK button.Now turn on the Beep for the D750, select &quot;M&quot; mode, and make sure both Menu A1 and A2 are set to &quot;focus&quot;, and the auto-focus is set to AF-S or AF-A, NOT AF-C... Now when you press the shutter/back button to focus, the camera should Beep when it thinks Focus lock has been achieved.Now, with the camera on a tripod, focus on a subject, now turn ON live view. Did the camera beep?&nbsp; NOW, carefully, press the center OK button on the wheel... The camera should Zoom in on the pixels... now carefully, adjust the focus ring on the lens until pixels are in sharp focus. &lt;--Depending on the lens, you might have to turn OFF auto-focus to get the lens to free wheel... In which case, use the Green Focus lock, light in the viewfinder as an indicator that the camera achieved a phase detect lock.&nbsp; Depending on how much you have to turn the focus ring to see sharp pixels, will depend on how much the lens and camera are out of sync with their design specs.&nbsp; You shouldn't have to turn the focus ring but just a small tweak...&nbsp; The phase detect system and the mechanical focus adjustment of a lens are NOT a hard fast linear connection... Nikon frequently makes adjustments to lens sent to them for service to bring a lens within the plus/minus parameters of the fine-tune system...</blockquote>

[QUOTE="Fred Kingston_RIP, post: 762097, member: 10742"] On the D750... Go to Menu F1 "OK Button", then select "Playback Mode", then select "Zoom on/off", then select "1:1(100%)" and press the OK button. Now turn on the Beep for the D750, select "M" mode, and make sure both Menu A1 and A2 are set to "focus", and the auto-focus is set to AF-S or AF-A, NOT AF-C... Now when you press the shutter/back button to focus, the camera should Beep when it thinks Focus lock has been achieved. Now, with the camera on a tripod, focus on a subject, now turn ON live view. Did the camera beep? NOW, carefully, press the center OK button on the wheel... The camera should Zoom in on the pixels... now carefully, adjust the focus ring on the lens until pixels are in sharp focus. <--Depending on the lens, you might have to turn OFF auto-focus to get the lens to free wheel... In which case, use the Green Focus lock, light in the viewfinder as an indicator that the camera achieved a phase detect lock. Depending on how much you have to turn the focus ring to see sharp pixels, will depend on how much the lens and camera are out of sync with their design specs. You shouldn't have to turn the focus ring but just a small tweak... The phase detect system and the mechanical focus adjustment of a lens are NOT a hard fast linear connection... Nikon frequently makes adjustments to lens sent to them for service to bring a lens within the plus/minus parameters of the fine-tune system... [/QUOTE]

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