Wing Shing Photo Supplies is probably the best photography store in Hong Kong. It is neither one of…read morethe giant chain stores, selling stock-standard consumer units, nor is it one of these local photography stores, tucked in the back of a computer centre somewhere.
What you get with Wing Shing, is a very well stocked shop, staff that are more knowledgeable than in the Fortress or Broadway, but all of it with a slightly better safety-net then the local mom and pop stores in Sham Shui Po. Don't get me wrong, shopping here is still quite difficult, especially if you're not a Chinese speaker. The staff, whilst knowledgeable, can be pretty grotty and aggressive, but just let this pass over you, do your browsing, and buy if you want or need to.
The shop stocks brand new camera ranges; Canon, Nikon, Go Pro, etc., lenses, bags, tripod, filters, as well as some of the more obscure photography accessories; dollies, pro-sumer DV cameras, microphones, waterproof cases. There is also an excellent lens departments, with both new and used lenses. The staff here are particularly knowledgeable and geeky, and will be up to run you through the difference in products whether they be the known brands or Chinese copies.
If you know exactly what you want to buy, and perhaps are after some of the less quality critical products, like bags or clear glass filters, you may be better off going to the mom and pop stores in Sham Shui Po, which will be significantly cheaper. However, if you want to have a browse and play with all the camera kits, and get a bit of decent advice, then Wing Shing would be a good first port of call.