The Purpose of Camera Lens Hoods and Why You Should Use Yours

image of a canon lens with a petal lens hood for blog post about the purpose of camera lens hoods

If you just bought your first camera kit, you may be wondering what the plastic thing is that came with your lens. Maybe you’ve been doing photography for awhile and even have been using your lens hood but haven’t questioned why.

So what exactly is the purpose of a camera lens hood?

Lens hoods are plastic or metal objects that clip onto a lens in order to block out certain unwanted light rays from entering into the front of the lens.

By keeping out that unwanted light, lens hoods eliminate or reduce flare that can be recorded onto your images. They also increase contrast in images.

Additionally, while not the direct purpose of lens hoods, they also protect lenses from damage. Many photographers (I would say mistakenly) use filters solely to protect the front element of their lenses.

But you don’t need to put a filter that reduces your image quality on your lenses when you’ve got a lens hood that protects things just as well and actually IMPROVES image quality. There are certainly uses for filters but not for lens protection and that’s an entirely different discussion in and of itself.

Lens hoods aren’t just effective for combating flare outdoors; they keep unwanted light from various sources out of the lens even when shooting indoors.

Should you use a lens hood on your lenses?

In my opinion, there’s no doubt about it – you should absolutely use your lens hoods the majority of the time. They both add protection to your expensive lenses and increase image quality by keeping flare to a minimum and maintaining contrast.

Exceptions to the Rule

There are times when not using a lens hood is the ideal choice. You may want to shoot with the lens hood off when you want lens flare for artistic purposes.

I know some photographers absolutely love the look of flare and incorporate it into their photography whenever possible. But keep in mind that unfortunately when you go for that flare look it’s difficult to do it without reducing contrast, which can make things look washed out.

Lens hoods can also become an issue if you’re trying to be discrete, such as when you’re photographing people candidly. In that case, you might want to take it off.

Do lenses come with hoods or do you need to buy them separately?

This depends on the manufacturer; with Nikon they include a lens hood with all their lenses. Canon, on the other hand, sells them separately at an additional cost.

I think this is a mistake on Canon’s part; it’s a small piece of plastic that probably costs a buck to produce and Canon makes you buy them separately for twenty bucks a pop or more. When you buy a thousand dollar lens, it’s kind of silly to have to purchase a lens hood separately.

What type of lens hood should you get?

There’s really only one lens hood that you’ll use for any given lens and they’re optimized to keep unwanted light out specifically for that lens. Lens hoods can be bought from the same manufacturer of the lens or from a third party manufacturer but they will be the same design.

Why are some lens hoods shaped differently?

Lens hoods are optimized for each individual lens and are shaped so as to get a compromise between providing shade for the lens but also not getting any part of the lens hood within the frame.

Prime lenses come with circular lens hoods that appear to simply extend the barrel of the lens.

image of two canon prime lenses with their lens hoods on showing to explain the purpose of camera lens hoods

For zoom lenses on the other hand, they come with lens hoods that almost appear as if they’ve had cut-outs taken out of them. These are called petal lens hoods and are just optimized for whatever specific zoom lens they’re meant to go on.

image of a canon zoom lens with a petal lens hood

What if you forget your lens hood?

If you accidentally left your lens hood at home or you just don’t have a lens hood for whatever reason, it’s not the end of the world.

If you’re without a lens hood, you can place your free hand, a hat, or some other object on the side of the lens where the light source is coming from to produce a similar shading effect that a lens hood provides.

Want to learn more and have some of these concepts reiterated through video? Check out this helpful video by Phil Steele here:

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