I bought a cheaper wide angle lens and was amazed at the better image quality of this lens. Only fit when I removed the handle with XLR connectors, the diameter is too big from 5mm. However, this is a solid lens, well built and the resulting image/movie is excellent. It's heavier than the cheaper lens - a lot heavier, but I suspect the glass weighs a lot and contains a lot more glass than any other I've used. It didn't have the vignetting that another lens I tried has when zoomed out. For the $199 I paid this was a good buy. .