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<blockquote data-quote="Englischdude" data-source="post: 245328" data-attributes="member: 16372">Hi all,i know there is enough info on the web about the backfocus issues some experience with the D7000, however I would be interested to know at what point should I be sending the unit back to NIKON? My D7000 is still under guarantee, and when I received the camera at the end of August I noticed it was sometimes difficult to maintain focus at the larger apertures. After alot of research on the net I thought the first thing to do would be to get some practice, hone my skills in order to eliminate operator error.Since one week now I am the proud owner of a D80 which is my fallback body. Tonight I decided to download a focus chart and compare the focus with the same lenses on both the camera bodies. The D80 was more or less spot on regardless of which lens I used, however the D7000 proved to be back-focusing considerably under exactly the same conditions. Using the AF- fine tune function I managed to get better results with the following settings:NIKKOR 50mm AFD 1.8&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Correction -18NIKKOR 35mm AFS 1.8&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Correction -14NIKKOR 28-80 AFD 3.3-5.6&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; No correction neededNIKKOR 18-105 AFS&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; at focal lengths above 90mm -20 was not enough to correct the issue.My feeling is that the camera must go back to NIKON for adjustment/calibration. Agreed? Although the adjustment scale allows +-20, if I am having to get close to the limits to get acceptable performance this suggests to me a camera issue. I would appreciate hearing your thoughts.Many thanksMartin</blockquote>

[QUOTE="Englischdude, post: 245328, member: 16372"] Hi all, i know there is enough info on the web about the backfocus issues some experience with the D7000, however I would be interested to know at what point should I be sending the unit back to NIKON? My D7000 is still under guarantee, and when I received the camera at the end of August I noticed it was sometimes difficult to maintain focus at the larger apertures. After alot of research on the net I thought the first thing to do would be to get some practice, hone my skills in order to eliminate operator error. Since one week now I am the proud owner of a D80 which is my fallback body. Tonight I decided to download a focus chart and compare the focus with the same lenses on both the camera bodies. The D80 was more or less spot on regardless of which lens I used, however the D7000 proved to be back-focusing considerably under exactly the same conditions. Using the AF- fine tune function I managed to get better results with the following settings: NIKKOR 50mm AFD 1.8 Correction -18 NIKKOR 35mm AFS 1.8 Correction -14 NIKKOR 28-80 AFD 3.3-5.6 No correction needed NIKKOR 18-105 AFS at focal lengths above 90mm -20 was not enough to correct the issue. My feeling is that the camera must go back to NIKON for adjustment/calibration. Agreed? Although the adjustment scale allows +-20, if I am having to get close to the limits to get acceptable performance this suggests to me a camera issue. I would appreciate hearing your thoughts. Many thanks Martin [/QUOTE]

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