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<blockquote data-quote="yauman" data-source="post: 292049" data-attributes="member: 15418">So here's the two versions of autofocus lenses.This one say M/A and M.&nbsp; In the M/A position, it will autofocus but you can override that by just turning the focus ring. It's very smooth - there's a clutch mechanism that will let you manually focus without damaging the autofocus motor: [ATTACH]82870[/ATTACH]This is the other version - it's a lot more common.&nbsp; With this autofocus lens, you cannot turn the focus ring when the switch is in the AF position. You will find that the focus ring is resistant to turning - don't force it, you can damage the autofocus mechanism if you do. Turn the switch to the MF position the focus ring will be freed up to manually focusing.&nbsp; This switch is not meant to be flipped back and forth while you are composing - don't &quot;practice&quot; to be able to do that because it's not mean to be used that way.&nbsp; Select the position before you shoot and stay with it. There is really really no reason to switch while you are compositing once you figured out the many amazing and versatile focusing modes the D7100 offers (much more than the D600!)[ATTACH]82871[/ATTACH]Hope this helps.</blockquote>

[QUOTE="yauman, post: 292049, member: 15418"] So here's the two versions of autofocus lenses. This one say M/A and M. In the M/A position, it will autofocus but you can override that by just turning the focus ring. It's very smooth - there's a clutch mechanism that will let you manually focus without damaging the autofocus motor: [ATTACH=CONFIG]82870._xfImport[/ATTACH] This is the other version - it's a lot more common. With this autofocus lens, you cannot turn the focus ring when the switch is in the AF position. You will find that the focus ring is resistant to turning - don't force it, you can damage the autofocus mechanism if you do. Turn the switch to the MF position the focus ring will be freed up to manually focusing. This switch is not meant to be flipped back and forth while you are composing - don't "practice" to be able to do that because it's not mean to be used that way. Select the position before you shoot and stay with it. There is really really no reason to switch while you are compositing once you figured out the many amazing and versatile focusing modes the D7100 offers (much more than the D600!) [ATTACH=CONFIG]82871._xfImport[/ATTACH] Hope this helps. [/QUOTE]

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