Hi guys, to those who own both 50mm f1.4 and 85mm f1.4 can you please tell me what's the different in quality of picture for both of these lenses??? I know there is an 35mm extra closer but is it worth you to spend an extra $850 for a 85mm f1.4??? Please explain why 85mm cost so much ... Also, do you like the idea of 50mm f1.4 + 1.4x or 1.5x teleconverter VS. the 85mm f1.8?? Thanks a lot!!!