DSLRUsers.com

There’s a compiled list of traders based in HK selling photographic equipment. Retail prices included. The list is regularly updated. It could be useful for those who are travelling to HK or stop in HK while in transit.

http://www.ygdragon.net/index.php?page= ... aprice.htm

I had a map that I used with some of the camera shops marked out, but can't find it at the moment
However, you can just image search Man Shing or Wing Shing if you want to see what the shop front looks like...

Thanks Joey, very helpful as I'm going to Taiwan in Dec and most likely to stopover in Hong Kong.