if you are talking D7000 series, within the budget range, the nikkor F/4 300mm PF should fit. it will give you a focal length of about 450mm on your crop sensor camera body which is more than enough for most wildlife and birding photography. any increase in the focal length can be done with a 1.4 or a 2 X Teleconverter. To top it off, you will be able to fix this to a mirrorless body using a F to Z converter for Nikon. The advantage of a prime lens will always outweigh the zooms at any time. This will also force you to learn to move your feet to get the perfect shot and the right composition. Please do check if the lens is compatible with your camera.

• This reply was modified 1 year, 3 months ago by  CS P.