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AF won't autofocus - Canon Cameras

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  • 12string May 14, 2008

    auto focus trys to tur lens. no red focus points lite up , no picture taken green lite to the right of a number 9 in the right of the view finder blinks. switch lens to manual focus and try to focus lens still will not focus, distance scale in the window on top of lens dose not move but picture is taken. the lens is a 50mm 1.4 usm

  • Anonymous Jan 18, 2009

    I have the same prob. The auto focus on my 400D suddenly stopped working. There is a 9 in the bottom right corner of view finder that will not change. I have tried removing the lens (standard 18-55mm), taking a pic and then replacing it, also tried a different lens. Nothing works.

  • Anonymous Feb 23, 2009

    I have the same problem. I had a 75-300MM lense on the camera and removed it and put the standard 18-55 lense back on and the autofocus wouldn't work and tthe picture won't even take. I took the lense off the cameran and took a picture and the mirror moved and the picture took

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I had a similar problem with my XTi. I swapped between two lenses and the issue stayed with the camera most likely because the AF logic is in the camera, and not the lens. What fixed my issue was when I took the lens off, and tried taking a picture to see how the mirror reacted. Sure enough, something was blocking my mirror from activating during the shot. I didn't see anything blocking, so I assumed it was "stuck". I moved the mirror, and after that, the AF worked fine when I put the lens back on. Not sure if this will help.

Posted on Jul 20, 2008

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I had the same problem. I had AF mode set to AI Servo, as soon as I switched to AI Focus or One shot everything started working again. Hope this helps

Posted on Feb 25, 2009

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Operating nikkor 70-300mm f4.5-f5.6 with nikon d5100


No Nikon lens ever zooms automatically, so I assume you mean focus.
The D5100 lacks an autofocus motor, requiring the lens to have one. The older 70-300mm lenses lack this motor, expecting the camera body to have one.
The D5100 will only autofocus with lenses designated AF-S or AF-I. It will not autofocus with older AF-D and AF-G lenses.

May 24, 2013 | Cameras

1 Answer

What type of lenses fits this camera


Lens mount Nikon F mount (with AF coupling & AF contacts)

Lens compatibility • D-type / G-type AF Nikkor (except IX-Nikkor): Autofocus and all functions possible
• PC Micro-Nikkor 85mm f/2.8D: Usable in Manual exposure mode
• AF Nikkor other than D-type (except AF Nikkor for F3AF): All functions except 3D Matrix Metering possible
• AI-P Nikkor: All functions except 3D Matrix Metering and autofocus possible
• IX-Nikkor: Cannot be used
• Non-CPU: Usable in Manual exposure mode (exposure meter cannot be used)
Electronic Rangefinder usable with lens with maximum aperture of f/5.6 or faster.

Jul 04, 2011 | Fuji FinePix S2 Pro Digital Camera

1 Answer

I have a Nikon D3100 and want to buy a zoom lens 70-300.Please help I am confused is a Nikon AF Zoom-Nikkor 70-300mm f/4-5.6G compatible? And is it automatic focus?


That lens will work with the D3100, except for the autofocusing. In order to autofocus with the D3100, you need AF-S lenses, such as the AF-S VR Zoom-NIKKOR 70-300mm f/4.5-5.6G IF-ED or the
AF-S DX NIKKOR 55-300mm f/4.5-5.6G ED VR.

May 22, 2011 | Nikon Cameras

1 Answer

Just bought a new eos d600 . How do I turn on the autofocus?


Set the autofocus switch on the lens to AF. Press the autofocus button on the camera (right on the cursor pad) to bring up the AF mode. Use left/right or turn the command dial to select the desired autofocus mode and press SET.

It's in the "Changing the Autofocus Mode" in the manual (page 83 in my copy).

Mar 23, 2011 | Canon PowerShot SD600 Digital Camera

1 Answer

Using a Nikon D40 digital slr with a AF-S DX Nikkor 18-200 1:3.5-5.6 G ED lens I was previously able to autofocus bun now am not. Can you suggest reasons why this may be?


Please check if the Autofocus-switch on your lens is set to M/A. Also check if the Autofocus on your camera is switched on. For detailed information about your cameras autofocus, please check this site: http://www.kenrockwell.com/nikon/d40/af-settings.htm

Jul 18, 2010 | Nikon D40x Digital Camera

1 Answer

I have a Nikon D60 and my autofocus has stopped working. It is not because of the lense because i have tried other lenses and the auto focus won't work with them either so it must be an issue with the...


You should check custom menu setting 2, and make sure it's set to one of the auto modes. Make sure the lenses you are using are AF-S and not regular AF lenses. The D60 has no autofocus motor, so autofocus only works with AF-S lenses.

I always suggest folks take a look at Ken Rockwell's website also, here's a link to a specific page on autofocus on the D60.

Post a comment here if none of this works and I'll see what else we can do.

http://www.kenrockwell.com/nikon/d60/af-settings.htm

Jan 08, 2010 | Nikon D60 Digital Camera

1 Answer

Nikon d3000 autofocus issue


you should change the focus lock to AF-S, instead of AF-C

Jan 02, 2010 | Nikon D3000 Digital Camera

2 Answers

Nikon D300 - Auto focus point won't move. Autofocus doesn't work.


The lock that's around the 4-way button that moves the AF point will stop it from moving. The AF switch (says C,S,M) on the body below the lens release button gets knocked to manual and turns off the AF

Oct 11, 2009 | Nikon D300 Digital Camera

1 Answer

Automatic focus not working


The D40x only autofocuses with the latest AF-S (and old professional AF-I) lenses. Most traditional (screw-type) AF lenses from 1986 through today will not autofocus on the D40x. If your lens says "AF-S," you're fine.
Most lenses sold today for the D40x are AF-S, and so is the included 18-55mm kit lens. Many non-Nikon lenses from Tamron, Tokina, Quantaray, Sigma and anyone other than Nikon still won't autofocus on the D40x. Try before you buy, but honestly, there isn't much the included 18-55mm lens won't do.
Autofocus systems are fast, but not usually instantaneous. You have to hold the shutter down halfway as you compose the first shot so the AF system can focus and lock, and then the camera fires instantaneously when you press the shutter the rest of the way. See Preventing Shutter Delay for more.

Jul 14, 2009 | Nikon D40x Digital Camera

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