I have asked for somewhat more advanced optical effects somewhere in the forum in the past and remember Ondra saying that it was a rather easy thing to add. Since this will produce even more awesome images it would be super nice to get some advanced options.
Please have a look at this pages:
Cat’s eye bokeh:
http://toothwalker.org/optics/bokeh.html
And some other effects - spherical abberation (over-correcting and under-correcting), chromatic abberation:
http://www.bhphotovideo.com/explora/photography/tips-and-solutions/understanding-bokeh
Brazil had an option for over-correcting and under-correcting back then and it’s something I really miss as it added a nice touch to the image.
Oh, I forgot to add vignetting to the request… but that’s probably on the list already.
I wanted to do vignetting yesterday but then some other shit happened 
Lighting fast as always - great to hear, hope the shit isn’t of the bad kind.
I hope you manage to add some of the effects linked above
it is the usual “lots of work” kind
it is the usual “lots of work” kind
My favorite kind - best served in the summertime when others go swimming and sip their cold drinks 
Duplicate: More optical abberations - Corona for 3ds Max :: Requests - Chaos Forum
I swear I searched but my keywords were too simple. Thanks!
Want to add more advanced DOF lens effects，:）
Bumping for dev’s attention - please consider adding this for 1.8!
Ondra once said, that bumping old requests is the worst thing you can do, because he takes his ideas from the last pages of the board ;]