> You are looking for circular or diagonal FE? I suggest try do some search of how the pictures would look like and decide later on which type to buy.
As I said, I am looking for something between 8 and 16mm. I currently use an 8mm and a 10-20mm, (mostly at 10mm), on my Canon 350D so I am familiar with the effects. It is not simply a case of wanting circular or diagonal FE, I will have to make a compromise choice as the so little or nothing to choose from. At the moment I feel inclined to delay purchasing an A900 until Sigma bring out their 8mm lens with a Sony fitting.
Pete