I need your opinion on this one I had an Olympus E520 with 18-180mm and later upgraded to Canon 60D with the kit lens 18-135mm, I am doing mostly food photography which I use in my food blog (http://angsarap.net) now that I have a wider audience I want my photos to look better(to please more viewers) hence planning to buy a Canon 50mm lens which I heard that is good for food photography. Now I am looking at the f1.4 and f1.8 MK II, I read alot about both lenses and I have some worries in both of them so I need the professional guidance on people who have used both perhaps in similar application. Here are my worries *f1.4* Looks like a very fragile lens according to what I read online, is this true that it is susceptible to AF locking when bumped? If I buy this do I need to prepare my self to go for repairs often? while $500 is not that expensive the real expense for this one is $500+ whatever future repair costs will be. I also read some articles that it is soft at wide open. Is it worth the extra bucks to jump from 1.8 to 1.4? *f1.8 mk II* Flimsier than 1.4 but the price can justify, my big worry is the bokeh quality but if I use subtle backgrounds rather than repetitive lines will the bokeh still be harsh? I know the AF is slow at low light but I am used to is as the 18-180 is slow in low light as well, is this lens any better in terms of AF? Any sugestions on what should I buy? If you have some sample food or even product photos using both lens you can also post as that would help a lot. My max budget buying a lens is in the price range of f1.4 so f1.2 is not an option nor the Sigma 50mm f1.4. Also please take note I want to use that lens for low light handheld and portraits but mainly food.