What's the usual metering mode that you use?
If you are using spot metering, then exposure depends heavily on which point you select for metering. For matrix metering this is usually not a problem...
In this case it could be either a problem of the metering system of your camera body, or that of the lens that you use. Try some other lens and see if things change.
Two months into my D7000 and a few thousand shots later, I seem to observe that the D7000 tends to overexpose by 0.5EV or so a lot of the time. Anyone else observing this? Any suggestion to fix it other than using exposure compensation?
Though I would agree that its the person to tweak his tool to get the best looking images, however, i have also found my D7000 overexposed as much as 0.7 to 1EV compared to my 60D and A33 for the same settings at the same scene.
I dun think it's a major problem, as it could be easily fixed during PP, but just needs to be aware of it.
Also in terms of metering accuracy and rendering, I do find 60D does it more accurately (looks more realistic). D7000 (probably due to its better DR) tends to make the shadows looks unrealistic at times.
But then again, many will again argue that nothing can't be fixed during PP.
So ignore what I have said if that doesn't bother you.
at the same time, not sure if you guys have this issue where the focus accuracy between good lighting (day time) vs low light. In low light condition it tent to OOF vs day time tact sharp.
Of course la, ask you to focus manually also got problem... The camera also needs light to focus.
Focus of all cameras will drop in low light condition, failure rate higher, misfocus rate higher..