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Nikon D7000 backfocus problem

Michael Miller , Dec 04, 2010; 10:48 a.m.

I know there are some other threads in the internet about it, but I just want to mention it here too. I returned my first D7000 body because of a severe back focus problem that could not be corrected with the in camera AF-fine-tuning. The camera back focused with a new AF-S 50mm f/1.4G and also with a little older AF 85mm f/1.8D lens. The second body I got from a different store, has exactly the same back focus problem. It can't be corrected with the in camera AF-fine-tuning. For example, using a new AF 50mm f/1.4D with a setting of -20 there still was some back focusing. Very disappointing for such an expensive and new camera if you ask me. I sent the camera to a Nikon Service Point for repair and I am awaiting the results. I am just curious if there are other photo.net users that experienced the same problems with their D7000 camera.

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Shun Cheung , Dec 04, 2010; 10:57 a.m.

I have not experienced any problems with my D7000; including no back focus issues, but I only have experience with exactly one sample.

I also should point out that I am very picky about AF accuracy so that I tend to use 1 of the center 9 cross-type AF points in most situations. I have experienced AF issues with the outside, line-type AF points. But having AF issues with line-type AF points is a common problem on all (Nikon) SLRs, including the D3 family.

Nish Sivakumar , Dec 04, 2010; 11:55 a.m.

Scary!

Shun Cheung , Dec 04, 2010; 12:17 p.m.

I should point out that focusing issues could be due to lenses. If you are sending your D7000 in for check ups concerning focusing problems, you probably should also send the lens(es) in question. If you don't, Nikon repair might not be able to reproduce the problem with their lenses and your problem won't be fixed.

Incidentally, since the OP was able to find two D7000 bodies from two different camera stores, it looks like the D7000 shortage even in these early days is not that serious.

Michael Miller , Dec 04, 2010; 01:04 p.m.

I am also very picky about the autofocus of my camera. I hate shooting batteries, charts and brick walls, but it just has to be reliable (especially with larger apertures like f/2.0), since I don’t like to use manual focus. I try not to use the line type sensors but only the cross type ones and preferably the one in the center. I sent my camera with my AF 50mm f/1.4D lens to Nikon, so they can reproduce the problem. It should arrive at the beginning of next week and hopefully I’ll have my camera back at the end of the week. Of all the shots I made, it had 100% back focus. So, no shots with the right focus plane. In the viewfinder everything looked okay. I even saw the very small ‘dancing’ lines on the ground glass in the right place when focusing. There seems to be a D7000 shortage now, since the camera store had none in stock for me to swap. I had to send it to Nikon for repair. I’ll let you know what the outcome is.

Shun Cheung , Dec 04, 2010; 01:12 p.m.

I sent my camera with my AF 50mm f/1.4D lens to Nikon, so they can reproduce the problem.

That is perfect. Good luck.

Ellis Vener , Dec 04, 2010; 04:43 p.m.

Haven't seen these problems with my D7000 and 85mm f/1.4G either.

Robert K , Dec 05, 2010; 08:18 a.m.

It would be helpful if OP can tell us what are his AF settings. These cameras' AF settings are complex and confusing. An AF discussion without spelling out the settings can be misleading.

Michael Miller , Dec 05, 2010; 12:44 p.m.

I use a single center focus point with single auto focus. Apart from the auto focus (what’s in a name) nothing automatic. I don’t find auto focus settings very complex, but I understand that it could be a little intimidating for a first time SLR user. I hope this information is useful.

Michael Miller , Dec 06, 2010; 02:00 p.m.

Wow, those guys at the Nikon Service point are fast as lightning! They received my camera and lens this morning and only a couple of hours later I got an e-mail telling me they fixed it and shipped it back. Really kind of them to speed up the procedure because I need the camera at the end of this week. I hope to receive it tomorrow (or the day after tomorrow) and of course I’ll let you know if the back focus problem is solved.


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