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Message: <blockquote data-quote="aroy" data-source="post: 305859" data-attributes="member: 16090">I can split the problem into two parts.1. If all your zooms are having focusing problem, the AF module in the camera requires adjustment. If you have any shorter lenses, zoom or prime, test them for focusing accuracy. If all lenses have the same problem then it is definitely the body. If shorter lenses are fine, then it your long zooms.2. Most of the non-professional zooms are quite soft at the long end. Even the professional ones are softer than the primes. If you want a good long lense at a budget, then the Nikon 300mm F4 with TC 1.4 will give you much sharper images at both 300mm and at 420mm (with TC) than any zoom. An added bonus is that they are lighter and faster too. This lense is quite sharp wide open and excellent stopped down one stop.</blockquote>