I am wanting to purchase an older HD camcorder. Something with a high level of optical zoom 50x + and an external audio in jack. I really don't want to go down the separate audio route. I have done that. I want it for filming long distance target shooting where it will be mounted on a tripod and also some product videos done at my desk.

A few years old is fine I don't need the latest tech for this as it might get a bit of rough use.