I bought my D7000 from Adorama in January as a refurb. I have 2500 plus or minus actuations on the camera. It appears to (or I appear to be) back-focusing a fair amount. I know this was prevalent from reading your forums and the auto focus system is somewhat complex for a relatively new photographer but is there an easy test to do? I have not upgraded firmware in a bit either and don't know what version firmware I have or how to update. Would a firmware update fix this if it is the camera? If it is the camera Id like to try to get it addressed before the one year mark is up if it is really under warranty.
#1. "RE: D7000 back focus and firmware" | In response to Reply # 0km6xz Nikonian since 22nd Jan 2009Sun 01-Dec-13 11:02 PM
If there is a camera related focus problem, it should be consistent and reproducible. In what way do you mean "back-focusing a fair amount?
Is something behind a quality AF target always in better focus than the intended target or occasionally? If the AF system is misadjusted it would be unusual that any image would be in focus. If it is occasionally back or front focusing it is probably due to a setting being wrong or a technique that is the root cause.
Can you post an image file with the EXIF data intact that illustrates the problem you are seeing?
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#2. "RE: D7000 back focus and firmware" | In response to Reply # 1rnagel Nikonian since 12th Dec 2011Mon 02-Dec-13 01:14 AM
Thank you. I do appreciate your help and feedback.
It is likely user error but I want to confirm this before I start calling Nikon or Adorama. This does not sound consistent with the back-focusing issues of the early D7000 days does it? It has occurred mainly with prime lenses, a Sigma 30mm f1.4 and a Nikon 50mm F1.8G. It has been back focusing, never front focusing. This may help with what is going on. It has happened on portraits where the background is in focus and the subjects are not. I will see what I can post. I am reading extensively on the Autofocus systems to try to see where I may be going wrong. It is complex for someone without a ton of experience.
Does Nikon have a firmware update for user error?
#3. "RE: D7000 back focus and firmware" | In response to Reply # 2jbloom Nikonian since 15th Jul 2004Mon 02-Dec-13 09:27 AM
What you are describing (the background being in focus) is not typical of "back focusing." Back focusing is when the lens is focused slightly behind the subject but in front of the background. When the background is in focus, it suggests simply that the camera's chosen autofocus point is one that was on the background rather than the subject.
As you say, the AF system is somewhat complex, which is why more detail is needed to try to understand why this might be happening. Information such as:
- What AF mode, AF-S or AF-C?
- If AF-C, what AF-Area mode? (Single point, dynamic, etc.)
As Stan says, an example image with intact EXIF data would help.
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