http://www.flipkart.com/canon-ef-75-300-mm-f-4-5-6-iii-usm-lens/p/itmcx3sgyngjkumm?pid=ACCCX3SGYNGJKUMM&otracker=from-search&srno=t_2&query=Canon+55-250&ref=6c1271e2-3f14-49eb-8033-41704d8c1224

Cool cheap lens. But that's what it is. Don't expect AF to work well on a modern camera. In MF on 75-125ish it shot slightly worse than my kit 15-45 EF-M. But that's expected with the higher range. Too much noise however requires a lot of photoshop and resolution scale down to make good images.

I picked this lens up for its range. I use it on a T2i. I'm more of a wide-angle guy so I just wanted this lens for when the urge struck me to take pictures of birds and far away things.

cheap; light; long

soft and CA at wide apertures

Canon 75-300mm USM III review.

In summary the main positive points of the Canon 75-300mm USM III are; Autofocus is quiet and fairly responsive; Light weight and easy handling; Distortions well controlled; Price

Negative points are; Sharpness falls off towards the long end; Rotating front element; Narrow focus ring (Minor point

The Canon EF 75-300mm f/4-5.6 III Lens is nearly the same as the Canon EF 75-300mm f/4-5.6 III USM Lens with the latter having a better AF system and the former a better price.

Good solid performer at low cost.

The optical system, construction, and exterior are the same as the EF 75-300 mm f/4-5.6 III USM's. The difference is that it uses a DC motor instead of a USM to drive the AF.

The EF 75-300mm III is Canon's most affordable telephoto zoom, and as an EF model it's also compatible with both cropped and full-frame bodies, although its low price means it's best-suited to entry-level cameras.