the weight difference is the only reason I got this lens. I've used both and cannot see much (any?) difference without a multiplier.
With the new 1.4 III on it, it is definately sharper than the previous combo. I'm not a pro either but would not have been able to capture some shots that I have if it was not for the hand holdability of this lens. I really like it.
Thank you for your feedback! I appreciate it! I think I really have to start saving and perhaps get this lens by the end of the year hopefully...

























