The Canon EF 70-300mm f/4.5-5.6 do is usm is a telephoto lens produced by the Japanese house from 2004 to 2017. It is equipped with automatic focus that is made by an AF to ultrasound engine, reliable and quiet and is also equipped stabilization of image, effective and functional. The images derived from the use of this landing are of not excellent quality but not even scarce, one settles on a fair sharpness with sufficiently faithful colors and chromatic aberrations have not been detected. It is an medium -high -end lens and the price from new is in line with this category. It is compatible with both FF and APSC devices, a quality always appreciated by those who own both formats. The speaker is supplied, weight and reduced measures, compared to similar lenses, give it a good practicality and comfort in the use. It has a very high minimum fire distance (almost one and a half meter) but those who buy this kind of lenses do not seek macro focals. The quality of construction is on average, materials of good workmanship that give resistance and durability. The Canon EF 70-300mm f/4.5-5.6 do is usm is suitable for both professionals and amateurs who appreciate its versatility.