Review on Canon EF 70-300mm f/4-5.6 IS USM Lens - Optimized for Canon EOS SLR Cameras by Kitti Sak ᠌

Comments are superfluous, Canon keeps the brand, which cannot be said about other brothers from the East. Different pros: In general, I am satisfied with the lens. Takes clear pictures at both the minimum and maximum focal lengths. It is noticed that the pictures are clearer if you use a tripod, while turning off the stabilizer. Its cons: If you shoot somewhere in a quiet place, you can hear the motor buzzing, I would not say that this is ultrasound, as the manufacturer claims. Yes, it was right that it was noticed at the expense of full folding, you need to switch to manual focus mode.