I got an idea now about it. i'll search a lot to know better.

btw, alam, i dont think sony is better than Canon or Nikon. IMHO, i think Sony is only popular in advertising and many people, who is not necessarily knowledgble about camera choose Sony since the brand is more popular in other appliances. Hence, they would assume its a better brand than NIkon and Canon. well, thats what i thought.

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