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I have a Nikon D3100, for which I just bought a Nikkor AF-S DX VR 50-200mm f/4-5.6G zoom lens. This is a CPU lens and works very nicely in auto-mode, i.e. when you let the camera set the focus.

However, I want to also sometimes manually pull focus. How do I do that with this lens? It seems that it is missing the focus ring.

Is it not possible to set focus manually with this lens?

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2 Answers 2

up vote 4 down vote accepted

Please see the following diagram.

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Move the focus switch on the lens barrel to the MF position. You will now be able to focus by rotating the front-most part of the lens barrel.

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Yes, there is an A-M switch and I do set it to M when I use my other lenses. The problem is -- I can't find a focus ring on this lens. –  Water Cooler v2 Jun 19 at 17:46
    
@WaterCoolerv2 - It's a barely-visible hard plastic knurled ring right at the end of the lens. It's touchy, too - the tubes have a bit of play (wobble), so manual focus at longer focal lengths isn't easy. –  user28116 Jun 19 at 18:01
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@WaterCoolerv2 You will now be able to focus by rotating the front-most part of the lens barrel. Judging by the Wikipedia image it's the part highlighted here: i.stack.imgur.com/Nt8Uy.png You could confirm this by turning the lens back to AF and see which parts move while it tries to focus. –  koiyu Jun 19 at 18:01
    
Thank you. I'll try it tomorrow and report back. I've packed it away and it is night just now. I did notice this ring and tried fiddling with it while it was in auto-focus but only briefly as I feared I might damage the lens. I'll try again tomorrow. Thank you. –  Water Cooler v2 Jun 19 at 18:08

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