A DSLR is the ideal camera for some vlogs, and using a DSLR means you get to customize the look of your vlog by choosing the perfect lens. Choosing the best camera lens for your YouTube channel can be tricky because there are so many options. This article will walk you through some of them, and make two recommendations of great vlogging lenses. If you already have a good understanding of how camera lenses work then feel free to scroll down to the lens recs.
Part 1. Understanding Lenses: Zoom lens, Fixed lens, aperture, f-stop
There are two main categories of camera lenses: ‘zoom’ – lenses that allow you to zoom in and out – and ‘fixed’. If your lenses are tools then zoom lenses are Swiss army knives; they are very versatile. Fixed lenses, also called prime lenses, have more specific purposes. Do you need a tool that can do a lot of things, or a tool that is perfect for one specific job? Sometimes it is useful to have access to both.
In order to be able to select the lens you’ll be using to record your YouTube videos, you first need to understand a few very basic concepts, such as aperture or f-stops.
1.What is a lens’s aperture?
The aperture of your lens is the hole through which light reaches your camera’s sensor, or the film if you are using a film camera. The wider your aperture is the more light you are letting into your camera. In low light it is better to have a wide aperture, and when you are working with a lot of light it is better to have a narrow aperture so your footage is not overexposed.
Aperture is simply an opening in the lens that lets the light through. If you want to increase the amount of the light that is reaching the camera’s sensor you need to open up the aperture blades that are located in the lens. The f-values like f/1.2 or f/1.8 indicate that the aperture is wide open and that the camera is receiving the maximum amount of light a lens you’re using can provide.
2.What is an ‘f-stop’?
Light passes through your lens’s aperture on its way to your camera’s sensor, and the f-stop of your lens relates to the amount of light it lets in. The lower your f-stop, the wider your aperture, and the more light you are letting into your camera. The more light you let into your camera the easier it is to achieve a blurred background. A lot of vloggers love blurring their backgrounds because it is a quick way to disguising the rooms they are shooting in.
F-stops are written like ‘f/1.8’ or ‘f/4’ on your lens. For more information on f-stops and blurring your background read “The Best Bokeh Lens - How to Get the Blurred Background for YouTube Videos” and watch Tasha’s video.
F-stops or f-numbers indicate how open the aperture is, so for example if your camera is displaying f/32 value it means that your camera is letting very little light to get through to the camera’s sensor. The f-number depends on a few other parameters such as shutter speed, exposure or ISO values. Large apertures provide a shallow depth of field which creates a smooth and artistic background blur, while a small aperture enables you to keep both the background and the foreground of your shot in focus.