I am looking for some advice/recommendations for cameras. I don't want a small compact joby but don't want a huge thing with inter-changable lenses. I have been told that 'bridge' cameras are probably what I need. These are a half way house between the other two and apparently only the one lense is needed able to go from big telephoto performance down to wide angle with just the one lense. Does anyone know anything about them particularly using in the field.