Oh yea before you rock your way down to buy the Tamron 17-50, bear in mind that there isn't any Tamron Service Centre in Singapore.
You will get warranty for the lens, but if anything happens, it has to shipped overseas for repairs.
Still, it makes a good lens.
The best things in life are free.
http://www.clubsnap.com/forums/showthread.php?t=166673) and found that some of them send it to MacPherson Industrial or tithes marketing at Kallang Pudding road for repair. Where is it actually?
however, any sample pictures for tamron?
I'm not trying to be nasty, but please please don't sit and wait for the world to spoonfeed you.