Sigma 24-70mm f/2.8

I met up with John who picked up my Sigma lens in Boston, on the way to Costa Rica. I finally saw the lens a couple of weeks after I purchased it. The wait was worth it. I like this lens. It is fast, and on a moving bus, VR does not matter -- speed matters. I shot quite a few photos from a moving bus on rough terrains so the speed was quite welcoming. It was also good in the lower light conditions of the Cloud Forests. However, when handheld in the morning light on stable ground, my Nikkor 18-200mm VR II will beat this Sigma 2.8 lens hands down.

Here is a photo I took of a hummingbird in flight. I think the 18-200mm would have done a better job but this shot with the Sigma is not bad. The settings were 70mm, f5.6, ISO400, flash on.