Looking for a new lens? Perhaps you're stepping up from a compact camera to one with an interchangeable lens, or possibly you are aiming to expand your shooting potential beyond the kit lens that came with your camera. Here's what you need to know to find the perfect lens for you.
The name of a Canon lens includes all the key information about it. Take the Canon RF 100mm F2.8L MACRO IS USM for example:
- RF = the lens type, corresponding to the different types of lens mount on Canon cameras.
- 100mm = the focal length of the lens.
- F2.8 = the maximum aperture.
- L means this lens is one of Canon's L-series "professional" (higher-quality) range.
- MACRO = includes the capability to capture images at macro magnification.
- IS = the lens has a built-in optical Image Stabilizer to reduce blurring caused by camera shake.
- USM = Ultra Sonic Motor, a fast and quiet focusing motor.
- Specialist lenses may have other elements in their names, relating to the design or technologies inside such as Fisheye, DS (Defocus Smoothing) or DO (Diffractive Optics).
- Some lenses also have II or III in the name. This denotes the model number, rather than any properties of the lens. For example, the EF 75-300mm f/4-5.6 III USM is the third version of this EF zoom lens with a focal length range of 75-300mm, aperture range from f/4 to f/5.6 and a USM motor.