I've had the D7000 for a few months now, and love many things about it - including the metering, which I think is incredible, the colors, and the overall IQ. I have noticed some inconsistency in the AF performance, however - sometimes it is dead on, other times it is strangely off. I sent Nikon some samples taken with my 50mm f1.4 lens, which usually focuses perfectly, but which I have had occasional unexplainable (to me) out-of-focus episodes with. Nikon suggested sending the body and lens in for testing. But similar things also occasionally happen with my 35mm 1.8 lens, which leads me to believe the problem, if there is one, is more likely with the body than with any one lens. (I have had to fine tune both my zooms, but have not fine tuned my primes because most of the time they don't need it when everything is operating 'normally'). Would you send in the body only for testing, or the body with one lens, or the body with a few lenses? I'm a bit hesitant to send in the lenses, because I can still use them with my D90 and don't really want to be without them....
I'm hoping I can get this all sorted out soon, because at this point I trust my D90 more than my D7000 to nail the focus, and it shouldn't be like that. When the D7000 is on - which is most of the time - the images are remarkable. But I need to be able to trust it.
#1. "RE: What would you do?" | In response to Reply # 0ShrimpBoy Registered since 08th Jan 2006Sun 03-Jul-11 12:36 AM | edited Sun 03-Jul-11 12:37 AM by ShrimpBoy
Are you using one of the automatic or continuous focusing modes? Perhaps it's picking up something to track without you realizing and shifts focus over to a different point. You've got lots more focus points on that new body.
Off topic but because I'm curious, how far across the frame do the focus points go? On the D90 the outermost focus point width-wise is only just outside the quarter-frame grid line, and height-wise it doesn't even get that far away from frame centre. The D7000 may have 28 more focus points but do they cover more of the frame? That's what I would like to have.
On a silly note, if you don't want to send your D7000 to Nikon, send it to me and I'll send you my trusty D90 in return.
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#2. "RE: What would you do?" | In response to Reply # 1km6xz Nikonian since 22nd Jan 2009Sun 03-Jul-11 08:33 AM
What focusing mode(s) does it happen? Is there some common element to the shots where it occurs, such as objects packed into the area of the selected focus point but at different distances? Is anything in the frame in-focus when this happens. Are you setting your shutter to Focus or Release mode?
Regarding the focus points, the 39 points are spread out over a larger portion of the frame than any other Nikon. The view finder is larger and brighter than my D90, so the wider range of FP's positions is quite a noticeable improvement. One thing I do notice is when 3D or other tracking AF mode(most of the time I use a single FP), compared to other cameras, the camera selected FP is quite active in jumping around to other points that appear to be on closely related planes.
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#3. "RE: What would you do?" | In response to Reply # 2camelguy Registered since 16th Jun 2011Sun 03-Jul-11 02:40 PM
thanks for your replies. It happens in both AF-S and AF-C - I rarely use AF-A or 3D. And the troubling thing about it is that it's erratic - if it was consistently off, that would be easier to understand. I would say that it's more likely to happen with outer focus points, but not always. When I contacted Nikon, I basically expected them to say 'user error'. Instead, they asked me to take some shots using only the center focus point at ISO 400. I did, sent them in, and they suggested I send the camera in for testing, along with the lens. I will definitely send the body, but if I send both the body and the lens, then I need to figure out a window in time when I wouldn't be wanting to use the lens. But since the issue has also arisen with other lenses, I'm just not sure how relevant the lens is to the equation.