What does IS in Canon lens mean?

IS in the lens is the abbreviation of ImageStabilizer, which means image stabilizer. Using floating lens to compensate the influence of hand shake on shooting is the earliest optical stabilization technology used in cameras.

Among the SLR lenses that junior photographers contact more, Canon and Nikon account for the majority, and other well-known brands such as Pentax, Sigma, Tokina and Tamron also have their own worlds.

Usually it will indicate whether the lens is AF mount or EF mount, and usually it will contain some lens category identification;

1, focal length parameter: indicates the focal length range of the lens in mm;

2. Aperture parameter: indicates the maximum aperture coefficient of the lens, and some lenses also indicate the minimum aperture coefficient of the lens;

3. Features: Indicates the feature technology adopted by the lens, etc. This is also the content to be explained later.

Version number is also one of the common logo text contents, indicating which generation of products the lens belongs to in the same specification lens.

In addition, we can also see the same information on different brands of lens logos, such as:

CFMicro: Quanhong, English full name continuefocusmicro. This kind of lens can directly focus on the macro shooting state at all focal lengths.

Macro: Macro function. It means that the lens has macro shooting ability, usually reaching the magnification effect of 1:2 or above.

Fisheye: Fisheye lens, which realizes special fisheye distortion effect.

R: infrared ray, which is the full name in English. In infrared photography, the focus baseline mark is engraved on the lens barrel.

SC/MC: single layer/multilayer coating.

Telephoto lens: telephoto lens.

Zoom: Zoom lens.

There are also some lenses related to the German optical industry, which are not often used by junior filmmakers, such as Leica and Zeiss, and they will be preceded by the word Distagon.

Finally, once again remind everyone that the logo characters of these lenses are generally printed or etched on the pressure ring at the front end of the lens, and there are also practices of printing corresponding characters on the mirror body. Some special lenses will be further marked with the T-stop sign under the F-stop sign, such as Minolta STF 135/2.8[T4.5]. In addition, the words "Distagon" will be added in front of the lenses related to the German optical industry that are not commonly used by junior cinematographers, such as Leica and Zeiss.