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<blockquote data-quote="Ricardo" data-source="post: 475764" data-attributes="member: 40163">Recently I purchased a D810 and an AF-S Nikkor 50mm 1:1.4G lens. All worked well during weeks till suddenly the AF was shot down. After studying for hours it worked again, without knowing the reason why. Then AF shot down once again. Not even focusing light is turning on in dark circumstances. Of course side switch is in AF position, not in M position. On the lens switch is in M/A position, not in M position. Focusing mode is AF-C, but AF-S doesn't work either. One suspect: It occurs when I change to “live view”, especially&nbsp; video. Video is not my main subject, but wanted to try it. Maybe unwillingly y changed some other affecting settings. Already tried to reset default settings. &nbsp;It is different to the problem of our colleague who posted “<a href="http://nikonites.com/d810/31804-help-my-d810-having-auto-focus-issues.html" target="_blank">HELP! My D810 is having auto focus issues</a>”. I had this problem, too. But a look to the manual saved me. But, very theoretically, it is the same problem. Is it possible, that the focusing point goes so out of range, that focusing is lost? If so, how to reset it?&nbsp; &nbsp;Someone can help before recurring warranty? Thanks in advance</blockquote>

[QUOTE="Ricardo, post: 475764, member: 40163"] Recently I purchased a D810 and an AF-S Nikkor 50mm 1:1.4G lens. All worked well during weeks till suddenly the AF was shot down. After studying for hours it worked again, without knowing the reason why. Then AF shot down once again. Not even focusing light is turning on in dark circumstances. Of course side switch is in AF position, not in M position. On the lens switch is in M/A position, not in M position. Focusing mode is AF-C, but AF-S doesn't work either. One suspect: It occurs when I change to “live view”, especially video. Video is not my main subject, but wanted to try it. Maybe unwillingly y changed some other affecting settings. Already tried to reset default settings. It is different to the problem of our colleague who posted “[B][URL="http://nikonites.com/d810/31804-help-my-d810-having-auto-focus-issues.html"]HELP! My D810 is having auto focus issues[/URL][/B]”. I had this problem, too. But a look to the manual saved me. But, very theoretically, it is the same problem. Is it possible, that the focusing point goes so out of range, that focusing is lost? If so, how to reset it? Someone can help before recurring warranty? Thanks in advance [/QUOTE]

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