There isn't much competition in Dallas when it comes to camera stores. You either go to a large retail electronics store like Best Buy, or you go to the very few specialty stores, such as Wolf. They have a decent selection of cameras to choose from, and a myriad of accessories and tools for your camera, digital or film. The employees are usually knowledgable and are able to help you with any questions you may have. They do work off commission though, and sometimes that does stand out a little while they are trying to make you a sale. Their equipment is a little expensive, but that is usually the case with a specialized store.
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