There are three main things to consider when choosing a camera zoom lens: focal length, aperture, and image stabilization. The focal length is how far away from the camera the lens can focus. The aperture is how wide open the lens can be and affects the amount of light that enters the camera. Image stabilization helps to reduce the amount of noise in images.
The Different Types of Camera Zoom Lenses
There are many types of camera zoom lenses, each with its own unique properties and use. Here we’ll take a closer look at the four main types: focal length zoom lenses, digital zoom lenses, optical zoom lenses, and digital image stabilization (DIS) lenses.
Focal length zoom lenses let you change the magnification ratio of your image by altering the focal length of the lens. This is the most common type of camera zoom lens, and it’s also the simplest to use. Just pull out your lens’s focal length rangefinder to find the magnification ratio you need, and snap! You’re ready to shoot.
Digital zoom lenses work much like digital cameras themselves – by digitally cropping the full image sensor size to create a smaller version that can be displayed on a monitor or printed out. As a result, these lenses typically offer lower resolutions and less detail than optical zoom lenses. However, they’re much faster to use – just point and shoot. And because they don’t require any extra hardware (like an optical viewfinder or camera body), they’re perfect for portable shooting situations.
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