"delta" F0 Error (D700)

<p>I've been trying to find out more info on the issue I have with my D700 when 24-70mm is mounted (it's the only lens affected, but I've read that users have similar issues with third party lenses too).<br /> At random, I'd get "delta" F0 error (doesn't matter the mode - usually A or M). After shutter release, I get all black image, and then all goes back to normal.<br /> Since it doesn't happen frequently, I haven't had the urgent need to contact Nikon service about this, but would be nice to see if anyone has information on specific cause for the error.</p>

<p>Turns out the D700/24-70mm combo is affecting a few users. Here's a pic from one owner's flickr account (I'm hotlinking here, sorry - the guy has a full set posted here: http://www.flickr.com/photos/mattli/sets/72157612500319598/).</p>

<p>Thanks in advance.<br /> <br /> <img src="http://farm4.static.flickr.com/3459/3192922080_8324d2038e.jpg" alt="" width="500" height="375" /></p>

<p><a href="http://www.flickr.com/photos/skymyrka/4180787742/sizes/m/"> </a></p>

<p>That is an indication of a non-CPU lens (or no lens attached). See page 120 of your English D700 manual.</p>

<p>Dismount / remount?</p>

<p>Try rotating the lens a little within the lock detent? Sounds like the contacts aren't mating right for whatever reason.</p>

<p>@Todd:<br /> thanks, no need. After one faulty "all-black" shot it's back to business as usual. Happens at random, every 500-700 releases or so.</p>

<p>@Shun:<br /> thanks, I have a non-cpu lens where i get F0, but it's because it's rounded off to the nearest aperture val., and exposure if fine on those shots. This error that i'm questioning above happens in my case when I'm using CPU nikkor.</p>

<p>If you lens is AF, take a look at this thread: <a href="http://www.photo.net/nikon-camera-forum/00VK7n">http://www.photo.net/nikon-camera-forum/00VK7n</a></p>

<p>@Shun:<br>

thanks, it's no f-- error. lens doesn't have A ring either.</p>

<p>My point is that if your lens has a CPU (as all AF lenses do) but the body is showing no CPU, either as F-- or triangle F0, there is an electronic communication problem between body and lens.</p>

<p>@Shun:<br /> Thanks, that's the most logical explanation. But curious about more info on this. If there was a definite contact fault, it would need to be remounted or tweaked to gain back connection on the mount. Each and every time after single black shot lens is 100% operational. One time it happened in burst mode, so I had shot before and after just fine.</p>

<p>The contact block could have been damaged so the pins are not mated correctly to the contacts inside the camera mount. The pins are spring loaded but if the block is cracked or moved slightly out of position, they may have connection issues.</p>

<p>A second possiblity is that there is a grounding problem (could be a cold solder joint, most probably inside the lens electronics not the contact block).</p>

<p>@Bjorn:<br /> Thank you. From the behavior I suspect your second suggestion is right on the money. Thanks for the great insight!! Either way, eventually, I'd have to hand her over to Nikon ppls. It kills me that I'll be loosing time sending the lens in for service :/</p>