Quote Originally Posted by Jon Ruyle
But since the iq seems to fall short of the much cheaper canon f 1.8, I've gotta wonder what the point is.

"IQ" means different things to different people. You and I care more about resolution and contrast, but someone else may place more importance on the bokeh. The undercorrected spherical aberration on this lens makes the bokeh very different (and attractive) compared to lenses that are well corrected.


Also, for some users, such as 5D2 video shooters, the manual focus features are vital: "The 270°-rotating manual focus ring is wide (covering most of the lens barrel), very smooth and very precise.
There is no play whatsoever.
Again, there is no rubber on this ring - it is all metal.
Engraved distance markings on the MF ring are accurate and line up with the engraved DOF markings."


Cine lenses cost ten times their still-lens brethren just to have manual-focus related features such as precise markings, long throw ring, reduced breathing, etc.