With its 1.8 aperture, this little thing amazes me day by day, you would be pictures that most other more expensive targets have missed you. Photos evening, with reduced light, interior also, parties etc are made of the finest!
The fixed focal length of 50mm was troubling for me at first, having never used zooms, but we made it very quickly and then ... what a pleasure, what a discovery!
A big advantage too, is precisely that it is super light, so, we can keep a 450D with one hand, without tiring.
Personally, I am totally conquered, especially at this price !!