This is the flat lens without dome. The same lens doesn't vignette with other 24mm cameras however when you put the dome it does basically keep a similar amount of vignette as the lens in air. The fact you have to zoom to get rid of it means there is more fringing in the corners. Am getting a bit fed up of saying the same things over again. From a still point of view this upgrade brings nothing and takes away flexibility. From movie point of view is worth