have had the 50mm 1.8 for 2 years now and always loved it. It's fast, reasonably sharp and performs well. BUT. I've always been fascinated and curious about what the 50mm 1.4 would do for me after loving the 1.8 so much, and as the lens is so inexpensive, bit the bullet the other day and ordered from DWI online. So happy with the results this lens puts out, couldnt recommend it higher.