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

It creaks like styrofoam on glass. Different pros: The stabilizer is super tenacious, because of this, the camera decides that it is possible to take shutter speeds much longer than, for example, its analogue Canon 70-300. So, for example, under the same conditions, the Canon 70-300 tells the carcass (or how they communicate there) in the Av mode that you need to do a shutter speed of 1/60, then under the same conditions this Tamron tells you that you can do 1/10 and there will be no soap (the stub will pull out). Accordingly, by 1/10 the photo turns out to be much lighter than the Canon 70-300 can do. Different cons: It began to creak when trying to focus closer than 1.5 meters. It doesn’t interfere, but sooner or later a cap will come to him, since the sound is such that something obviously mechanically touches there and does not slide smoothly.