Since the appearance to the public in 1987, the Canon Electro-Optical System camera system with interchangeable optics has grown to unprecedented proportions. The brand's mirrors are used by amateurs and venerable pros in all corners of the globe. Long live the EOS series to this day. Moreover, there is an offer for every taste, colour and thickness of the wallet.

Conventionally, the Canon EOS system can be divided into several large camps. In the "thousandth" league, simple brand mirrors for beginners are concentrated. In the "hundredth" — amateur cameras with interchangeable optics are assembled. In the "tenth" — the cameras of the medium segment for photo enthusiasts. In the "single" — top-end mirrors with an eye on professionals. The family tree of the Canon EOS mirror system is presented more clearly in the article "Decoding the series and markings of Canon cameras".

Under the mirror league of Canon EOS cameras, a huge variety of interchangeable optics has been released.

In the versions for the markets of Japan and the USA, the usual digital indexes of the cameras of the "hundredth" series of the Canon EOS system are replaced by the loud Kiss and Rebel prefixes, respectively. The colours of the mirrors for these markets also often differ from the standard ones: white, red and blue coloring of the "carcasses" of cameras are not uncommon for them.