Hello there.

As I already mentioned in my introductory post, I currently own a Canon EOS 80d with a basic 18 to 140 mm lens. Right now I'm thinking about buying a telephoto zoom lens. I found a Sigma and Tamron 150-600 mm lens suitable for my camera. I guess this would be a perfect fit. But I don't know which one to buy. The Tamron is a bit more expensive then the Sigma. So does anybody here own one of the above lenses and can give me some advice?

I know both lenses are quit pricey. So I searched some websites for classified adds and found some cheap ones for sale online. Is it advisable to by a used lens or should I get a new one? Are there some common pitfalls to avoid?

Any suggestions are appreciated.

Paula.