So I'm doing my best friends wedding and she wants to buy me something for the camera. (As payment) What would you recommend in terms of a good lens with really good glass. Also something that might be useful for the wedding shoot. I was thinking something that could zoom a little further? I already have the stock 15-55mm lens that came with the kit (Canon Rebel 300D) And I bought a 50mm lens aswell. They're both plastic and I've been told the glass isn't the best in them. If you have any suggestions I would greatly appreciate it. Please and thank you!!!