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Old May 30, 2017, 4:12 PM   #1
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Default Inconisistent focusing with D800 in AF-C

I've had some focusing issues with the D800 and AF_C in the last couple of weeks with both the 50 and 85mm G's. This started a few weeks ago where I was at a friends daughters communion and found the cam struggling to take a shot or obtain focus. I ended up having to power off the cam and only this weekend noticed that some of the AF settings had reverted to defaults. Prior to that I used the cam with the 85mm at the London Marathon and the keeper rate was approx 75% (couldnt have been happier).

I've checked my AF settings (using back focus button; 1 or 9 point AF points; etc ) and reset them thinking I'd resolved the issue but only to find 50% of the pics I took on the weekend at ComicCon and Vitality 10K run are OFF. Any ideas what could be up ?
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Old Jun 9, 2017, 11:03 AM   #2
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Hi Hartj,

I did use the af-c mode now and then. This without problems. But settings where single point and 3D.
The 3D function works very well.
Maybe you can try this setting and see if there is a better result?

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Old Jun 13, 2017, 4:13 AM   #3
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HI Psacal

Haven't tried the 3D AF - I gave it a quick go and then switched back to single/9 point when it was picking something else up. I didnt realise that only the centre group of AF points are cross types or any I wrong ?

I need to def work on my technique as I may have changed something and thats effecting the accuracy. Also need to look at calibrating the lenses and the D800.

Really wish Nikon had a full camera reset to defaults option like the Oly's. I'd like to reset the entire cam and reconfigure.

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Old Jun 20, 2017, 6:21 AM   #4
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Hi Harj,

In getting acquainted with your camera and playing with the various focus settings, you may have changed a setting or two in the CSM menu(custom setting menu). Ken Rockwell has a detailed explanation of the various AF focus modes and how they work. You may want to read it.

Please do post if you find the solution


So you want to be a better photographer? Open your eyes and take a look at what is all around you.
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Old Jul 13, 2017, 8:53 PM   #5
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The D800 was know for this kind of focus issues, dis you fond the way to solve the problem?
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