# Deciphering Canon lens names **Canon RF 24-105mm f4-7.1 IS STM Lens** ## Canon RF This indicates that the lens is designed for Canon’s RF mount, which is used on their full-frame mirrorless cameras, like the Canon EOS RP. ## 24-105mm This range shows the focal length of the lens. It means the lens can zoom from 24mm, which is great for wide-angle shots, to 105mm, which is suitable for closer, more zoomed-in shots. This versatility makes it a popular choice for a variety of photography styles, from landscapes to portraits. ## f4-7.1 These numbers indicate the maximum aperture of the lens, which can vary depending on the zoom. At 24mm, the widest aperture is f4, and at 105mm, it narrows to f7.1. A wider aperture (lower f-number) allows more light to hit the sensor, which is beneficial in low-light conditions and helps achieve a shallow depth of field (blurred background). ## IS This stands for Image Stabilization. This feature helps to reduce the blurriness in photos that can occur from camera shake, especially useful when shooting handheld or in low-light conditions where slower shutter speeds are necessary. ## STM This refers to Stepper Motor Technology. Lenses with this feature use a stepper motor for autofocus, which allows for smoother and quieter focusing. This is particularly beneficial for video recording, where autofocus noise can be disruptive.