On the last count, I think there were 60 billion photo processing shops in HK. It seems you can't walk any where in this fine city with tripping over yet another photo store.
However, let me highlight one of my favourites, the Agfa Digital Express. Located in the dingy little "art" tunnel between the end of the esco and IFC mall, it is funny little pile em high, sell em cheap sort of store, that does digital photo printing, passport photos and other photo related services.
The lovely lady owner/manager is super efficient and speaks enough English to get by. She has the printing machines in the store, so when you need it within an hour, it actually is within an hour.
Photo printing aside, I always come here for my passport photos (to be fair most places are much of a muchness), but also my laminating. It is the cheapest place I have found to do laminating at only a couple of HKD per sheet, which is surprising as it is a store in Central. The lovely lady also will laminate to your spec, say you wanted to laminate a postcard in the middle of an A4 sheet (don't ask, it's for my diving), she'll do it no questions, other places mutter about plastic and heat and softness - grrrr!
Last note, she also sells a variety of photo related gifts and bits, just in case you really wanted a coffee cup shaped like a zoom lens. read more