Very nice high quality lens capable of producing wonderful images. It's early days for me, but it is proving to be razor sharp at f1.2 which is astonishing. The snap attached was taken while out walking yesterday evening in crummy light and apart from lifting the shadows is pretty much straight out of camera, I was going for a grungy look. Better lens than I expected and worth the money. Remarkably good in low light situations from an image quality point of view and focusses quickly enough. Not silent, but pretty quiet. I have rated it as only good for ease of use, simply because it is a precision instrument and an extreme lens design, so needs to be shot with care in shallow depth of field scenarios as the depth of field can be tiny close up wide open.