50mm 1.2 makes a difference

I would not believe but this lens really takes portrait photography to a new level. I just got it for 2 weeks from my friend, really expensive lens, now I know why. I did go to Oxford street to take some streets photos with the festive lights. I needed no tripod, this lens can see in the DARK ... I got only more amazed when I took some portraits, the subject in focus gets cut out from the background like it was in a cartoon ... I just love it ... needed to give it back since but I can not stop wondering when I will go and buy it, I need this lens ...