Question about Nikon D300 Digital Camera

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Auto focus on my d300 does not work - Nikon D300 Digital Camera

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  • Joel Kiel May 11, 2010

    Hi there, What lenses are you using? Sometimes Nikon lenses have a switch that says: M/MA Make sure it's on MA or A on the lens. Is the switch on the front of the camera that says: S, C, M set to S or C? if not.. you should set it to S to hear the focus confirmation BEEP from the camera. It could be that your camera is on C mode, and than it wil continuously focus.

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Clean the contacts on the camera body and the lens where they meet with a cotton swab lightly dampened with rubbing alcohol.

Posted on Sep 24, 2009

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There is a [MF - AF] switch on the camera body where the lens attaches to it.
Move the switch to the AF selection.

AF = AutoFocus
MF=ManualFocus

Posted on Sep 24, 2009

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Posted on Jan 02, 2017

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SOURCE: HI, I have a Nikon

You could try turning off the autofocus (on camera) and flip it back on. it may be a stuck motor or connection. May also be back CPU connections.

Posted on Aug 12, 2009

  • 58 Answers

SOURCE: 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

Posted on Nov 05, 2009

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1 Answer

Front focus


He Pete, My Nikon, also has front focus. But most DSLRs have more or less front or back focus. Thats why you can correct this. The setup menu has an option called AF fine tune. (second last line)
If you are not familiar with this (I guess that is the reason you asked this question) you can look on lots of internet pages, where they explain how to check and how to correct this.
I'll add one link for you, but there are many more. Some sites also offer the possibility to print a correction card. Some magazines, sometimes add cards as a service. But that could be just luck when you get one. Focus Testing In the (English) manual of your camera you can find how to fine-tune your camera on page 327.
Success.

Jan 21, 2014 | Nikon D300 Body Only Digital Camera

1 Answer

Did the sigma 75-300 dl will work with nikon d300?...i mean the auto focus and matrix focus


Yes. The D300 has a focus motor built into the body and thus does not need one in the lens. The lens will also meter properly with the D300.

Aug 10, 2010 | Sigma 75-300mm f/4-5.6 DL Lens for Nikon...

1 Answer

It didn't work auto focus


Having gone over a month without a response, I assume this is no longer a problem.

Apr 20, 2010 | Nikon D300 Digital Camera

1 Answer

My cable release is not working. It triggers the auto focus but will not take a picture.


Try setting the camera to M manual focus and manually focusing on the subject. Some combination of focus size and focus type may not focus unless the sensor sees a subject and is in focus. So if the sensor cannot see and know it is in focus it will not fire. If you subject is not moving then focusing in manual will ensure the subject is in focus and the camera can shoot.

Apr 10, 2010 | Nikon D300 Body Only 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

Nikon D300 When I depress the shutter half way or fully on my D300 the frame counter reads r27 and the lens (any previously compatible Nikkor lens) will not auto focus. The camera is not set in burst mode...


Only reason the lens will not auto focus when you depress the shutter half way is due to either lens AF switch is set to Manual OR camera body's focus system is on M. There is 3 way toggle switch below the synch port around the lens mount. It should be set to C or S in order for auto focus to work. If all the settings are correct and even "AF-ON", next to rear dial doesn't activate auto focus then the issue maybe in the setting or the body itself. As for the buffer reading r27, I think mine displays r## regardless of burst/continuous mode.

Jul 13, 2009 | Nikon D300 Body Only Digital Camera

1 Answer

Nikon D300 camera body shutter doesn't always work


Perhaps it is a focusing problem- try it on manual focus setting to see if the problem still persists...

May 05, 2009 | Nikon D300 Digital Camera

1 Answer

D300 shutter only closes at about 1/20 sec


lawsuit, take them to small claim court, Nikon will settle...

Feb 21, 2009 | Nikon D300 Body Only Digital Camera

1 Answer

HI, I have a Nikon D300 and I lost the auto-focus function. The AF works with my lens on my D70s, so it's not the lens. Any suggestions?


You could try turning off the autofocus (on camera) and flip it back on. it may be a stuck motor or connection. May also be back CPU connections.

Dec 15, 2008 | Nikon D300 Body Only Digital Camera

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