good Telezoom

there are several types of zoom, with a hideous cheap glass on its quality and you will have no visible detail, blind with not enough visible light for use at night or in dim light and finally the cream of the crop.

attention after the price as they continue to be differences,

but with this sigma you for your money, a very good finish, a sun by aluminum and not plastic, which just perfectly clipped and screwed to stay put.

and above all a constant F2.8 which allows you to use all the time, I get a proof photo taken my neighbor 47m (thank you google earth) even at night (automatic installation 8sec, but manual Suffice 4 sec)

I add a sigma x1.4 and I now come to stand in their kitchen that eats Milka chocolate or that are 2 outlet, and it is with the older generation, I ' dare not imagine what will give this objective x2 2001