Who It’s For:
This lens is the definition of the all purpose lens. It’s big, it’s heavy but with a 10x zoom range, there’s very little that you’ll need to take this lens off of your camera body for. So if you don’t like carrying a bag full of lenses around and just want a single lens to cover all the way from normal to super telephoto, this is the lens for you.
Who It’s For:
This is a mid-range telephoto zoom that is quite a lot cheaper than the professional offerings from Nikon and Canon, so if you need this focal length, it’s a bargain considering the other options in this range.
What We Like:Build Quality: While it’s not comparable to a professional series lens from Nikon or Canon the build quality is solid.
Who It's For:
This is Sigma's newest midrange zoom lens for photographers who need a fast lens at these focal lengths without having to drag around a bag full of prime lenses.
What We Like:Fast AF: The Sigma 50-150mm has very fast autofocus
Build Quality: This lens is built like a tank and should hold up to pretty much anything you throw at it. Although it probably wishes you wouldn't throw things at it.