sony nex c3 len

Hi I have just brought the nex c3 and it came with the two lens a 16mm and 18/55mm, what i am after is a telephoto lens for this camera up to around the 200+ mark. Sony do one for £600 and it out off my price range, could I buy an adapter and a lens from another company for this camera for around the £150/200 mark thanks Stephen

Sony's own Alpha lens adapter is pretty decent, as it comes with the translucent lens technology that lets the likes of the A77 and A55 constantly autofocus built in. The LA-EA2 is £350 RRP but expect that to drop soon, and there's some great 3rd party sony lenses out there from £150 upwards.