Tue 16-Feb-10 02:49 AM | edited Tue 16-Feb-10 02:53 AM by MEMcD
Welcome to Nikonians!
>Have I damaged the camera?
Most likely not!
>I recently took out the lens to >clean (as I noticed a fog in the lens after using it at an >airshow) and in the process of removing the lens protector (is >it called a lens filter?),
Yes! It is called a lens filter!
>I accidentally turned the focus >ring while it was on AF mode. I heard a sharp screeching sound >when I turned the focus ring and I turned it back (again I >heard the screeching sound). I am really worried that I may >have damaged the camera.
The camera should be fine! The AF drive motor is built into the lens! If the AF still works it should be OK!
>I am determined to learn and understand the D5000 after what >happened. What is the easiest and quickest way to learn to use >and care for our D5000?
>If I want to buy another lens, what would that be? We normally >take pictures of homes, buildings, dogs and portraits and I >believe our existing lens should suffice for our usage. >However, we recently took our D5000 to an airshow. Judging >from the photos, our existing lens is probably not adequate to >capture the planes in action (probably need a lens that zoom >many times more?). If there is one additional lens that we >want to invest in, what would you recommend?
Your choice will depend on you budget! The Nikkor 70-300mm f/4.5-5.6G ED IF AF-S VR ($550.00 US) that Roger recommended would be a very good choice if you are looking for something longer with excellent quality for a reasonable price. Good Luck and Enjoy your Nikons!