well between canon's non-Ls f/1.8 and the f/1.4 i believe the latter has a better build right? and some sites says its a big improvement on the 1.8. well a newbie like me can be wrong
although some people says they're using f/1.4 but normally sets it at f/2 for a sharper image.
as for the 18-50mm IS kit that comes with a 40d... some sites says with that.. its almost no better of compared to PnS. again they could be wrong.
keep it coming guys.
thanks.
So you need the better build? You gonna be thrashing your equipment or something? If you are purely concerned about image quality, the 50mm f/1.8 is no slouch, and I feel that as good as the f/1.4 version is, you may end up finding that the 50mm focal length is not your cup of tea, and starting with the f/1.8 version will not burn as big a hole as the f/1.4 version will.
Here's some photos shot with the f/1.8.


I don't know which sites you've been reading regarding the kit lens, but they're wrong on so many counts. Firstly, the IS kit lens is a 18-55mm, not 18-50mm, and secondly, it is WAY better than the quality of a P&S. Feel free to disprove this, but here's some proof:

Shot this with alternatve's 40D and 18-55mm IS. No sharpening.