So my 3 year old didn't cooperate, and this very cloudy outside but i've got something.
first- I'd like to amend what I wrote above. the very first thing i thought when i got the package was that can't be the lens. it's far to small. If canon had packaged and shipped it, they would have used a box 4x as large. Also, i think i the focus ring has no more scratchy feel than any of my Canon L's. It's very good.
I shot these in RAW and used DXO to convert them. I turned off the distortion correction, CA correction, and vignetting correction. Actually, when it loaded the files it thought they might have been shot with the Canon 35. I was hoping that would happen, and it did. It tried to correct barrel distortion that isn't there, and ending up causing distortion. That might change with focusing distance, i don't know. I don't really have much to quickly test coma as the clouds are very much out tonight, but i tried to use some street lights the best i could. I don't have many of them either. i just need a clear night to really test that.
yeah, the shots are crap, even from a get a look at this subjective, but i'll do better.
I think i like this lens.