I owned six months this goal - and I mean six months following a flight trip - and I must say I was pretty happy. He does his job, correct focus without being very fast. The rings of focus and zoom are quite large and comfortable. Brighter than its direct competitor sigma 10-20, but it is not especially critical to the landscape. Honest quality manufacturing, plastic, without being exceptional. The only goal or fishing, this is the dive. It is frankly not great, even at f8. In short this is good for beginners, but I think rather turn to the Sigma 8-16 in the future.