Sigma 18-250mm F3.5-6.3 DC OS HSM

If your camera have more than 11 Mpxl, I think they will be useless with this lens. The picture is not sharp at all at 1:1 zoom. It is less sharp at the edges and it have allot of chromatic distortions. I found the zoom very stiff. It is also relatively heavy. The autofocus is noisy when used in video. I returned it to B and H for a refund. I realized rarely make pictures above 150mm so I buy the 18-105mm Nikon lens. This is a sharp lens.

This lens has become my most widely used optic on my Sony a700. It may not be quite as sharp as equivalent zoom and prime lenses, but the outstanding distortion control and range more than make up for this. The macro performance is impressive, and the weight balances nicely with the a700. I just LOVE the optical stabilization when looking through the viewfinder! After further testing, I have found that this lens is much sharper than I ever expected and the bokeh is very nice. Sharp ...