Have noticed there's quite a few people on here who are into photography and have been reading about lenses recently. In the article i was reading it was stated that lenses with a faster aperture are better as the wider hole will let in more light, which i understand, i have a 50mm f1.8 lenses. 1.8 is obviously very fast and will let in lots of light.
All good in the hood so far, however my confusion is.... surely it doesn't matter, i read somewhere that to get a crisp portrait shot you should focus on the eyes and use about f5.6, so if i'm using my 50mm 'fast' lense at 5.6 it will be the same as using my carppy kit lense at 5.6???? if i use it at f1.8 it will let in loads of light, good for use in low light etc. however surely the dof will be ridiculously short??