This lens is pretty boss because:
1.) It's tiny!! it's half the size of my 18-55 and easy to cram into my camera bag.
2.) It can be your best friend or your worst enemy. Depending on what your aperture is at, this lens can make your picture sharp as all get out. Or, if at it's biggest aperture, really gives you depth of field.
3.) It was reallly cheap. $100-150? I think. It was in my budget at the time, that's all I know!
4.) I can be doing really bad portraits with my 18-55 and will put this baby on and BAM! suddenly i'm working magic, like in the engagement photo shown below!! Suddenly everything clicks and poses come together, and lighting and oh man. I love this lens!!
That's todays lesson! Invest in one good portrait lens :)