I'm not a professional as it relates to knowing everything one wants to know about a lens or camera but in using my Panasonic GH4 with this lens I am able to capture some amazing footage

I get amazing video footage with this baby

When you get good at it, you will capture some amazing footage!

The footage was fantastic with the limitation coming from my 5d2 and not the lens.

T/1.5 is awesome when you need it and love the declicked apper.

I recall reading reviews about the printed (as compared to etched) numbers wearing off, but if you keep your lens clean (as you should), this should not be a problem