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Message: <blockquote data-quote="BackdoorArts" data-source="post: 93890" data-attributes="member: 9240">Great point, and one that I often forget.  Quick explanation for those who are raising a questioning eyebrow, VR employs a small gyroscope inside the lens meant to counter any lens movements or shake.  When the lens is not moving, the gyroscope still is and can impart a very small amount of movement which on a long exposure can become very noticeable.  I suspect that it would be less so on sub-second shot, but it would definitely soften a multi-second exposure.  I would add that the D7000's mirror has a far more aggressive slap than my D90's - an annoying fact I've come to live with.  But if your handheld technique is even a little less than solid it can lead to a touch of fuzz.  Set your release mode dial to Q as you test these, and when using a tripod I will either use the 2-step remote (click 1, mirror up - click 2, shutter release) or turn on the Exposure Delay (setup menu d11) to make sure I eliminate all impediments to camera shake.  I've actually started using Quiet Shutter Release mode as a default whenever I would otherwise be in Single Shot mode.  Why not, if it removes one possible impediment to a great picture?  I need all the help I can get.  LOLAs for your specific images, CAM1, the handheld D7000 image is at f22, which I've come to find can soften some images just as much as a lens wide open, so you may want to try that at f18 or f11 just to eliminate that factor.  You'll also get a more manageable handheld shutter speed than 1/25, which would definitely be susceptible to the mirror slap I mentioned.  As for the test chart, I would think an ISO value below 1600 would benefit the sharpness factor as well.  For checking focus issues I like to shoot test charts at the lowest possible ISO value so I know any issues are with the camera/lens and not with noise.  Throw some more light on that thing and shoot again.</blockquote>

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