Lens Hoods: Types, Shapes, and When to Use Them

Why a lens hood matters

Lens hoods are one of the simplest accessories you can add to a camera, yet they affect every image you take. They attach to the front of the lens and extend past the glass, creating a shade. Their main job is to keep bright light sources from hitting the front element at an angle. That stray light scatters inside the lens and produces the washed-out contrast, veiling flare, or ghosting that makes photos look hazy. By blocking that light, a hood lets the lens deliver the contrast the optical design intended.

A hood also puts a physical barrier between the front element and the world. It can absorb a bump that would otherwise land on the glass, and it keeps fingers, rain, and dust away. For those reasons, many photographers keep a hood attached whenever the camera is out of the bag. Lens coatings also influence flare, but they cannot replace the shading a hood provides; see our separate guide on lens coatings and flare control.

Petal hoods match wide and zoom lenses

Petal hoods, sometimes called flower or tulip hoods, have an irregular shape with cutouts at the corners. The cutouts are there because the image sensor is rectangular, not circular. A wide-angle lens projects a wide field of view, and the corners of the frame are the most likely to be blocked by a cylindrical hood. The petals are shorter at the top and bottom and longer at the sides, matching the angle of view in each direction. This lets the hood shade the lens effectively without entering the frame.

Most kit zooms, wide primes, and standard zooms ship with a petal hood. The hood's shape is designed for that lens's focal length range. If you mount a petal hood on a lens with a narrower field of view, you may not get the full shading benefit, and you may see dark corners, a type of optical falloff detailed in our vignetting explained article. When you choose a camera body, think about the lenses you plan to pair with it, especially if you are moving between systems; compare options in our mirrorless cameras guide.

Cylindrical hoods for telephoto and uniform shading

Cylindrical, or round, hoods are symmetrical and extend straight out. They are common on telephoto and super-telephoto lenses. Telephoto lenses have a narrow field of view, so a round hood rarely causes vignetting. The round shape provides even shading around the entire image circle, and the longer barrel helps block light that would otherwise hit the glass from above, below, or the sides.

Cylindrical hoods are also useful when you need to rotate a front filter. Because the hood has a round cross-section, you can rotate the entire hood to adjust a polarizer or variable ND filter while keeping the hood in place. Petal hoods, with their irregular front, cannot be rotated without changing which edge is on top. For video work, many shooters prefer round hoods with a standard filter thread so they can attach matte boxes or follow-focus gears; see our video crop factor 4k 5k guide for how field of view changes when you switch formats.

Petal vs cylindrical at a glance

Choosing between the two shapes comes down to the lens's field of view and the kind of shooting you do. The table below summarizes the practical differences.

When a hood earns its place

Use a hood whenever you shoot in daylight or with strong artificial light. Even if the sun is not in the frame, it can slide just outside the edges and create flare. The hood reduces that. You may also notice that contrast improves when shooting into the light, which matters for landscape and travel photography.

Some situations call for removing the hood. Built-in flash units on compact or entry-level cameras can cast a shadow if the hood is too long. In very windy conditions, a large hood can act like a sail and put stress on a tripod setup. And when you store the camera, many hoods can be reversed over the lens to keep the package compact. The ability to reverse a hood is a design feature, not a sign that it should stay off.

How to pick a hood for your lens

Start by checking the lens's filter thread size. The hood must match the barrel diameter and the lens's angle of view. A hood made for a different lens can cause vignetting or fail to shade adequately. If you lost the original hood, you can look up the lens's specifications on the manufacturer's site and buy a replacement that uses the same attachment mechanism, either bayonet or screw-in. There is no standard across brands, so compatibility matters. The filter thread size guide explains how to read those measurements.

The shape of the hood follows the lens design. For wide-angle and standard lenses, choose a petal hood with the right mounting geometry. For telephoto lenses, a round hood is usually the better match. Some photographers keep a round hood on longer lenses even when the lens is designed for a petal hood, but this only works if the lens's field of view remains clear. Always test by taking a photo at the widest setting and checking the corners. If you are still deciding between camera systems, the full-frame mirrorless cameras guide can help you compare lens ecosystems.

What to pick for your use

Questions

Do I need a lens hood if I use a UV filter?

Yes. A UV filter protects the glass from scratches, but it does nothing to block stray light. A hood and a filter serve different purposes: the hood shades the lens, and the filter changes the light spectrum or adds protection. You can use both together.

Can a petal hood cause vignetting?

Only if the hood is not designed for that lens or is mounted incorrectly. A properly matched petal hood is cut so that the lens's image circle reaches the sensor. Mounting a petal hood from a wider lens on a telephoto can block the frame.

Should I store the camera with the hood on?

Many photographers reverse the hood for storage, which makes the camera more compact and protects the front element. On some lenses, the hood bayonet allows reversed mounting. When you are actively shooting, leaving it on is fine.

Do all lenses come with a hood?

No. Some budget lenses and compact cameras omit the hood to keep size down. You can buy a third-party screw-in hood that matches your filter thread, but a hood designed for the exact lens model is the safest choice.