Used on a 1.6 crop camera. I had put off buying this lens for several years mainly due to price.
In a photo journalist setting I have used it for boxing recently where the light levels are low and the quaility of light is very poor. Finding focus in this situation is difficult. The lens was ideal for this environment, it produced strong colours and found focus quickly. I was shooting at f2. A very good lens which I wished I had purchased sooner.