Sold my 17-55 f/2.8, today. Great lens, but I hardly used it, and whenever I go out, it's almost always at night, and even 2.8 doesn't cut it at times.

So I opted for Canon's 28mm f/1.8 with the money I got for the 17-55. I've been wanting this lens for a long time - something similar to a typical 50/1.8 on a full frame camera. I've already got a 50/1.8, but it's a bit long on an APS-C sensor.

So yeah, that's what I did, today.