Review on Optimized Canon EF 75-300mm f/4-5.6 IS USM Telephoto Zoom Lens for Canon SLR Cameras (Discontinued by Manufacturer) by Anastazja Orebska ᠌

The reviews, as always, are mind-blowing. Well, it's important to note the lens's drawbacks, such as its lack of a stub, its noisy motor, and its very small aperture. So go ahead and treat yourself to an IS, USM, and relax. But! That's not the same currency, right? ;) Thus there's no need to label as "disadvantages" the features that the maker proudly advertises. It's like buying a bicycle and then being disappointed that it can't reach 100 kilometers per hour in 5 seconds. The most magical impressions are those captured by the camera. If you take into account the fact that it lacks a stabilizer, has a sluggish focusing, and isn't particularly powerful, you'll realize that its fast aperture actually amounts to 101%. Feedback about HA and blur at 300 mm has been found on this site. Checked. I'd like to recommend you double-check your copy because I've noticed nothing of the such on mine.