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<blockquote data-quote="BackdoorArts" data-source="post: 115084" data-attributes="member: 9240">My D7000 had to be adjusted for backfocus on ever zoom I have.&nbsp; Period.&nbsp; I thought I'd done it for all my lenses and was getting rather disgusted with the camera while on vacation last week when I was shooting some birds the first day and everything was soft (I've been spoiled with the D600 and was using that to do landscapes while the 150-500mm was on the D7000 waiting for fly-bys).&nbsp; I swore I'd profiled it, but when I checked it was apparent that I hadn't.&nbsp; I shoot mainly in the 300-500 range with it, so I went outside, stuck it on a tripod, and aimed it at the corner of a square brick post on my in-laws' house at 45 degrees and shot with minimum aperture at 400mm and sure enough.&nbsp; It's now set at -12 and focuses fine (all my zooms are somewhere between -10 &amp; -18).With your shot, you're at minimum aperture, so your DoF is perfect for revealing a backfocus issue.&nbsp; If you've confirmed that the focus point is on his face then it's classic backfocus since the wooden box in the right is much sharper than the boy, and the focus point may actually be somewhere closer to where the pole is on the left.&nbsp; I've found that the ruler test works better under 105mm.&nbsp; Shooting at 200mm you'll want to do something more similar to what I did if you don't have something like this <a href="http://spyder.datacolor.com/portfolio-view/spyderlenscal/" target="_blank">lens calibration tool</a>.&nbsp; Also, know that most zooms will be soft to some extent at the extremes of focal length and aperture - and you've got both here.&nbsp; So even once it's calibrated your lens may not be tack sharp at these settings.</blockquote>

[QUOTE="BackdoorArts, post: 115084, member: 9240"] My D7000 had to be adjusted for backfocus on ever zoom I have. Period. I thought I'd done it for all my lenses and was getting rather disgusted with the camera while on vacation last week when I was shooting some birds the first day and everything was soft (I've been spoiled with the D600 and was using that to do landscapes while the 150-500mm was on the D7000 waiting for fly-bys). I swore I'd profiled it, but when I checked it was apparent that I hadn't. I shoot mainly in the 300-500 range with it, so I went outside, stuck it on a tripod, and aimed it at the corner of a square brick post on my in-laws' house at 45 degrees and shot with minimum aperture at 400mm and sure enough. It's now set at -12 and focuses fine (all my zooms are somewhere between -10 & -18). With your shot, you're at minimum aperture, so your DoF is perfect for revealing a backfocus issue. If you've confirmed that the focus point is on his face then it's classic backfocus since the wooden box in the right is much sharper than the boy, and the focus point may actually be somewhere closer to where the pole is on the left. I've found that the ruler test works better under 105mm. Shooting at 200mm you'll want to do something more similar to what I did if you don't have something like this [URL="http://spyder.datacolor.com/portfolio-view/spyderlenscal/"]lens calibration tool[/URL]. Also, know that most zooms will be soft to some extent at the extremes of focal length and aperture - and you've got both here. So even once it's calibrated your lens may not be tack sharp at these settings. [/QUOTE]

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