This particular Canon EF-S 55-250mm f/4.0-5.6 IS II Telephoto Zoom Lens has an amazing price and also some pretty decent specs. As you know Canon was falling behind Nikon as it currently offers a similar lens that includes vibration detection and reduction and its price is pretty similar to the one from Canon.
For those who need to know the IS can be switched to the off position in order to save battery. However it does not waste much battery even having it activated as it only becomes activated when you press the shutter just before you autofocus. Initially he may feel a small delay for the IS, but rest assured it will not affect the way you take your photos one bit.
There is a little buzzing sound when the IS is activated. Seems a little weird at first but it does not affect functionality of the camera one bit. The real benefit from this lens however is its great price specially since it includes an image stabilization zoom lens currently its price is set at $299 through Amazon but you you may find it cheaper in other places. Another great feature of this lens is that the images are very sharp as the stabilization works extremely well, a your images will benefit by having an enhanced compensation set at 250MM.
This particular anon EF-S 55-250mm f/4.0-5.6 IS II Telephoto Zoom Lens is also a lot smaller as well as it is lighter than the popular 70 – 300 that is made by many manufacturers another thing to note is it is sharper than the Sigma 70 – 300.
Now there are some downsides to this particular lens for one it feels really cheap, but the more you use it the more you get used to it, another downside to this lens is that it comes with a plastic mount.
Another downside to this lens is that it is a little bit slow to focus when the lighting conditions are bad meaning at nights, there are times that even that it will miss the entire photograph.
For a little more money than the cost of both lenses you can get the Tamrom 18-250 but not have Image Stabilization. And now Sigma has an 18-200 WITH Optical Stablization for about what these 2 lenses cost retail, but in testing the 2 Canons produced better images.
Conclusion: A great EF-S lens for Canon users. (even if Nikon had to force Canon to make it for us.)