I am a beginner in photography, and I want to know the model naming rules of lenses used in SLR cameras.

It seems that your requirements for photography are very professional and highly oriented. You asked about Canon's top bull head.

At present, the price of this bull's head is around 12000 yuan.

While developing EOS- 1D Mark III, Canon has also introduced a well-received follow-up lens of 16-35/2.8L professional ultra-wide-angle zoom lens, which not only adopts brand-new optical design and lens materials, but also has excellent dustproof and drip-proof performance, and can maintain excellent imaging even in harsh environments, meeting the high reliability requirements of professional photographers, and is in line with EOS-65438+.

EF means electron focus.

16-35mmF2.8: focal length 16~35mm. Constant maximum aperture: 2.8.

L: luxury goods. A symbol of Canon's professional lens. Compared with consumer lens, L-head has ground aspheric lens, UD (low dispersion), SUD (ultra-low dispersion) or fluorite lens, which are important foundations for excellent optical quality of lens. Usually the structural quality of the lens is much better. Its logo is the red mark on the front of the lens, which is Canon's top professional lens.

II: It represents the second generation upgrade product of this lens version.

USM: Ultrasonic motor. The focus motor type used by most EF lenses uses a vibration source with a frequency in the ultrasonic region to rotate, which is the main component to realize quiet and high-speed AF.

In addition, two names are popularized: cow head and dog head.

1.Tau: professional, with the highest price and the best imaging, which can be described in one word.

2. Dog head: also known as headgear. At present, the lens set of digital SLR cameras is generally an automatic head with no aperture and starts with G, so it is also called G head (that is, dog head).