This is the best camera store in Thailand – Fotofile on the first floor of MBK.
What makes this store good is that they specialize in higher end equipment. They stock a full line of Nikon and Canon bodies and lenses and their prices are about the same you would pay if you bought mail order from legitimate retailers like BHphoto.com.
The carry all the weird accessories that are produced in China and sell for way less than brand name American stuff. If you want a filter, lens cap, charger, non-OEM battery etc., they Chinese copies, which many times are as good as the originals, are available at Chinese prices. In the U.S., you have to order these from Hong Kong sellers and have them mailed to the U.S. In Thailand, you can run down to Fotofile at MBK.
Fotofile also stocks more specialized items like the Micro 4/3rds bodies and the better point and shoots.
What also makes this store great is that the clerks are knowledgeable.
I’ve been in the store several times with questions and they were able to answer all technical questions, they have never sold me something that doesn’t work, and what they’ve advised about equipment always jibed with my own knowledge.
I’ve also gotten free minor service a couple of times– cleaning dust off the sensor on my Nikon D200.
A class operation all the way down the line.
As a side note, there is another camera store on the third floor of MBK that is also good but stocks studio lighting supplies that are had to find. If you need a light stand, reflector, modifier, modeling bulb, etc. You can find them on the third floor of MBK.