Much obliged to everyone for your replies. I'm a newbie to this photography lark ! I'm amazed at how many different types of lenses are available particularly with the Canon EOS range of camera's.
I guess some lenses are interchangeable(?) between manufacturers. Am I right in thinking you don't have to stick with the same supplier ?
I say Canon because a friend recommends them highly although they do appear to be quite an expensive addition to the family !!
Many thanx again. ![Smiley :)](https://forum.shipspotting.com/Smileys/default/smiley.gif)
You can't use Nikon lenses on Canon cameras (or Pentax or Sony, etc, etc) and vice versa. However, you can use third-party lenses, such as Sigma, Tamron or Tokina, on any DSLR as long as the lens has the correct mount for your camera.
If you want a DSLR you can't go wrong with Canon. They - and nearest rivals Nikon, who are also very good - have the largest range of cameras and lenses to choose from so all eventualities are covered.
Ken, I agree. I rarely use my 400mm lens for ships because, at that range, the image is often affected by haze and you end up with a weird mirage. As for shake, an alternative to IS lenses is using a monopod, fairly lightweight and not as cumbersome and space-hogging as a tripod.