EOS is an electronic connection between the lens and the camera body, which has the purpose of complete connectivity of these parts photographic equipment. Through EOS, you can get the full EXIF data, stabilize lens, but also to manage the optics (where the lens does not have special rings). EOS allows not only the connection between the camera and lens, but managing other systems, such as batteries, memory and so on. Although, it sounds like science fiction for laymens, the EOS system is present in the market for 30 years. Named after the Greek goddess Electra, it's full name is Electro Optical System.
Canon EOS 650 analog SLR with film, and series of EF lenses are the first products labeled by EOS. EOS 650 is also the first electronic camera that is presented, and speaking of its quality, but also the whole system quality is the fact that the system is kept on Canon EOS cameras to this day, and was the best-selling series of interchangeable lens cameras from 1990 to 2003. Except the better handling of a system, EOS is a quality mechanical solution, because it replaced the old system with levers and needles, which were often worn out, or also broken during the careless placement of the lens.
Over time, the EOS allow transmission of more data, electronic image stabilization (the dream of every photographer), but also options such as HD video (5D II in 2008) and lowered the royal DSLR type of cameras on a beginners level (EOS Digital Rebel in 2003). Today the system is used on 24 different cameras and even 97 EF lenses. A total number of 95 EOS cameras (analog and digital), with more than a hundred EF lenses were presented during the last 30 years. All lenses are interchangeable, no matter with which Canon camerathey were purchased, which is also one of the advantages of the EOS system, because there is a larger market of accessories for cameras, especially if someone decides for used versions.
So far we've talked about the history and anniversaries related to the EOS. But what about the future? Although Canon is despised for killing optional video on their cameras, the hatred is easily compensated with further development and improvement of EOS system. Surely we can turn a blind eye on all the disadvantages that Canon has ever had, just to maintain and further enhance the EOS. Although the system can support almost every technological option that exist on competing cameras, Canon has decided to go through some kind of mainstream and develop the EOS system intended solely for professional photography, which does not aspire to some kind of spectacular photographic settings (such as offered by Sony).
Thus, the EOS system should be a synonym for quality photos and Canon's standard on all devices (except the simplest compacts) in the next 30 years. The new technologies have been announced, but we will probably see it on EOS only when they are proven, tried and tested. There were rumors about 3D and real displays, but what can be more realistic than the well-affected images captured by some of the EOS cameras?