Thank you Trenton, yes I imagine the reason that is dark is due to room lighting, I was not using anything else other the the light from the dinning room, I'm planing to get a Canon EF 24-105mm f/4L IS Lens, I was looking for a good lens that can do most of my walk around shooting.
if an image is dark or not, is not a consequence of the light available. Even in brightest sunlight you can underexpose if you want to. And even with less light than you had you could overexpose.