I've obviously already done searching on this and the general consensus seems to be that the Canon is sharper than the Sony. But I've yet to find any direct image comparisons to see if it's really that discernable in general use. I'm using the Sony NEX-6 and prefer manual focusing, I use the Canon lens for the majority of my photos which tend to be at dimly-lit venues. However, there have been occasions when the SEL50F18's AF and OSS would've been useful, so am wondering if it's worth my while buying one or not. While sharpness isn't the only factor to consider here, it's important to me and I don't want to waste my money on a lens that's going to ultimately leave me dissatisfied with the results.