I m not from Kolkata, but many guys talk about M.M. Photographers in Metro Gully....
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ALso, I m in support of Pana LZ10
Though U will never go wrong with any of the LZ10 or A1000IS or S550....
If U want wide angle for landscape go for LZ10...it gives U 30mm wide end...
If U want a big end go for Nikon S550..it gives us a 180mm tele end....[though it is not very huge..] [Wide end 36mm]