What's the difference between a black red circle and a white red circle in a Canon lens?

The telephoto zoom lens opened the era of white mirror with Minolta 70-200/2.8GT lens with leading optical quality at that time. The white lens was unique and very beautiful. Become a symbol of professional photography lens. At that time, Canon's 80-200/2.8L was still black and was called "old black" by Jiafen. Later, Canon improved the design of F/2.8 large aperture telephoto zoom lens, and the imaging quality caught up with Minolta, and the red circle of white mirror appeared. After that, all the professional telephoto cannons launched by Canon were replaced by white mirrors, which were rented to photographers in sports competitions. The stadium became a jungle with white lenses, which was simply a living advertisement of Canon. Since then, the white and red ring head has become the feature of Canon's high-end telephoto lens. Photography lovers are also proud of having a professional "little white". In the field of wide-angle zoom and standard zoom, the sales volume of L-head is far less than that of entry lens. A red circle is conspicuous enough, so Canon doesn't have to do white painting.

In fact, Canon's red circle L head and Nikon's gold circle lens are high-end lens logos, which has nothing to do with the color of the mirror body. In addition to Korean perverts, Nikon's high-end lenses are specially painted white, including a 28-70/2.8 standard zoom lens, which is very funny.