I'm shopping for a 300mm lens for my Nikon D60. Which lens do you suggest? I want to use it mostly to capture images of animals in the Kruger National Park?
One of them is stabilized (and weather-sealed but that does not count on your camera), the other two are not. Since you are shooting things that move, the stabilization impact will matter most when you shoot the animals at rest. The Nikkor AF-S 300mm F/2.8G ED-IF VR II and the Sigma 300mm F/2.8 let one stop more light in but beware that it they weigh at least one kilo more than the non-stabilized one. Most shots are taken from a Jeep in Kruger park, so it is recommended to bring a beanbag for support to cushion the lens against the window/door frame for stabilization. This means the Sigma 300mm F/2.8 will probably be a great compromise among these.
EDIT In case you do not mind a zoom, there are quite a few more which reach to at least 300mm. Note that some of these are quite slow (F/6.3) at the long end which is not ideal for wildlife.
I would get the Nikon 300mm f/4. I chose a 300mm f/4 as my first lens when I got into wildlife photography and it's been excellent, I've used it extensively.
- non-Nikon lenses will autofocus more slowly, which is a hindrance with wildlife
- f/2.8 lenses, while having some advantages, are a lot heavier and a great deal more expensive.
- Image Stabilisation is very useful even from a car
- Teleconverters can be useful .. but image quality (and autofocus speed) takes a hit. I have one but rarely use it.
You may want to consider a zoom like the Sigma 120-300. Driving around a park you may get much closer to animals than you think, and being able to zoom out is quite useful - changing lenses as little as possible while on a dusty road in an open vehicle is a good thing.
Also consider getting a 1.4x TC. Sometimes 300mm may not seem like nearly long enough and then you will appreciate the extra range... it comes with a price though, you lose a stop or two of light.
Whatever you get practice with it at the zoo and in someones car before you leave so you are used to how it works.
In addition to the fixed 300mm lenses Itai has mentioned, you could get a Nikon 180mm f/2.8 plus a 1.6x or 2.0x teleconverter. This would give you between 290 f/4 and 360mm f/5.6, depending on the teleconverter. This would cost much less that the 300mm f/2.8, and probably less than the 300mm f/4, and you might find it more versatile (using with and without the TC).
Another versatile options would be the Sigma 150-500mm f/5.6 (slow but has image stabilisation) or the Nikon 80-400mm f/4.5-5.6 VR.