You point your camera toward a bright sunset and suddenly see pale circles, colorful shapes, streaks of light, or a washed-out haze across the frame. Sometimes the result looks magical. Other times, contrast disappears, and the photograph feels flat.
That effect is lens flare.
Lens flare in photography happens when strong light enters a lens and reflects or scatters inside the optical system instead of traveling cleanly to the camera sensor or film. It can appear as visible shapes, soft haze, reduced contrast, or several effects at once.
Once you recognize what is happening, you can decide whether the flare belongs in the photograph.
What Does Lens Flare Look Like?
Lens flare doesn’t look the same every time. Two broad forms are especially useful to recognize: ghosting and veiling flare.
Ghosting creates visible shapes inside the frame. These may look like circles, polygons, colored spots, rings, or repeated bright forms that appear across the image. Their position often changes when you move the camera slightly.
Veiling flare is less obvious. Rather than producing distinct shapes, stray light spreads across part of the photograph and lowers contrast. Blacks become gray, colors look weaker, and fine detail may appear softer.
A photograph can contain both. You might see several colorful flare spots while part of the image also looks hazy.
Knowing which type you are seeing makes flare much easier to control.
Why Does Lens Flare Happen?
Modern camera lenses contain multiple pieces of glass called lens elements. Light normally passes through those elements and forms an image on the sensor or film.
When a very bright light source enters the lens, some light can reflect between internal surfaces instead of following the intended optical path. Other stray light may scatter inside the lens barrel.
The sun is the most familiar cause, but it is not the only one. Streetlights, headlights, stage lights, bright windows, reflections from water, and powerful studio lights can all create flare.
Your shooting angle matters enormously. A light source just outside the frame can sometimes create strong flare because stray light strikes the front element at an awkward angle.
Lens design matters too. Optical coatings, the number and arrangement of elements, filters, and the condition of the front element can all influence the result.
Lens Flare Is Not the Same as a Sunstar
Lens flare and sunstars are often grouped, but they are not the same optical effect.
A sunstar, sometimes called a starburst, is the pattern of rays that can appear around a small, bright light source when you use a relatively small aperture. Those rays come from diffraction around the aperture blades.
Lens flare comes from unwanted reflections or scattered light inside the optical system.
Both effects can appear in the same photograph. If you photograph the sun peeking around the edge of a building at f/16, you may capture a crisp sunstar and several flare spots at once.
That distinction matters because the solution depends on the effect you want to change.
Is Lens Flare Bad in Photography?
Not automatically.
Uncontrolled flare can lower contrast, weaken color, obscure detail, and create distracting shapes. For product photography, architecture, reproduction work, or any image where clarity matters, that may be a problem.
Creative photography is different.
A carefully placed flare can make backlighting feel warmer, add atmosphere to a portrait, create a nostalgic look, or introduce an imperfect quality that feels cinematic.
The most useful question is simple: does the flare make the photograph stronger?
If it covers a face, hides an important detail, or pulls attention away from the subject, move until it disappears. When it supports the mood, composition, or sense of light, it may deserve to stay.
How to Reduce Lens Flare
The fastest way to control unwanted flare is usually to change your camera position.
Move slightly left or right, lower or raise the camera, or let a tree branch, doorway, person, or building partially block the bright light source. Small movements can make a dramatic difference because flare depends heavily on the angle at which light enters the lens.
A lens hood is another simple solution. It helps block stray light from hitting the front element while letting the light needed for the photograph enter normally.
Keep the lens clean as well. Fingerprints, grease, water spots, and haze can scatter light and make bright scenes look worse.
If you are using a protective or creative filter, test the scene with the filter removed. Another glass surface in front of the lens can sometimes introduce extra reflections around strong light sources.
Practical tip: Take two frames whenever flare is questionable. Capture one version with the bright light exposed to the lens, then shade the lens or change position and make a cleaner version. Compare them later on a larger screen.
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How to Create Lens Flare Intentionally
Deliberate lens flare works best when you treat the light source as part of the composition rather than pointing the camera toward the sun and hoping for something interesting.
Start by placing a bright light near the edge of the frame. Move slowly while watching the rear screen or electronic viewfinder. Notice how the flare shifts as you change your angle.
Next, partially hide the light source behind something. A tree trunk, flower, shoulder, building edge, leaf, or window frame can reduce the intensity and create a more controlled result.
Make several versions with the light fully visible, partly blocked, just outside the frame, and completely blocked. One image may have rich contrast, another may feel soft and nostalgic, while a third may contain a flare shape that lands in the wrong place.
This is where flare becomes a creative decision rather than an accident.
For another way to turn imperfect light and unexpected results into creative exercises, please read Abstract Photography Challenge Ideas.
Does Aperture Change Lens Flare?
Aperture can change how bright light looks, but it is only one part of the equation.
Changing the f-stop alters the aperture opening and can influence how visible artifacts appear. Stopping down also makes sunstars more pronounced, which can make a bright-light photograph look dramatically different even when flare remains.
Rather than searching for one “best” flare aperture, make a short sequence at several f-stops while keeping the composition similar.
If aperture numbers still feel confusing, please read What Does f/1.8, f/2.8 and f/4 Mean on a Camera.
Does Focal Length Affect Lens Flare?
Focal length changes how much of the scene appears in the frame, which affects where bright light sources fall within your composition. A wide-angle lens may include the sun or several streetlights more easily, while a longer lens can make it easier to exclude some sources.
Still, focal length alone does not determine flare. Two lenses with the same focal length can react differently because their optical designs and coatings differ.
For a deeper look at framing, please check out Focal Length in Photography: What 18mm, 35mm and 50mm Mean.
Try This Simple Lens Flare Test
Choose a bright light source and photograph it from several angles.
Place the light just outside the frame, then near one corner. Move it closer to the center, partially block it with an object, and finally shade the lens while keeping your hand out of the frame.
Compare the images for flare spots, haze, contrast, color, and shadow detail.
Repeat the exercise with another lens if you have one. The goal is not to decide which lens is “good” or “bad.” You are learning what each lens does when light becomes difficult.
If you enjoy learning through small visual experiments, please check out Creative Fall Photography Ideas for more ways to work intentionally with light, movement, reflections, and unusual viewpoints.
Printing a Photograph With Deliberate Flare
Flare can look subtle on a bright screen and much more noticeable in print, particularly when it lowers contrast in shadow areas.
Before ordering a large print, inspect the photograph at full size and check whether the flare helps the composition or hides detail. If the image needs cropping, confirm that the remaining file still has enough resolution for the print size you want.
The free Print Size Converter helps you compare pixel dimensions, DPI, and possible print sizes before exporting a finished photograph.
If file formats, DPI, resolution, and print preparation still feel confusing, Printing Photos Perfectly: File Formats, DPI, and Print Quality offers a practical guide to preparing photographs for print without turning the process into a technical guessing game.
Frequently Asked Questions About Lens Flare
What causes lens flare in photography?
Lens flare occurs when strong light reflects or scatters inside the lens instead of following the normal image-forming path. It often appears when the sun or another bright source is in the frame or near the edge.
What is ghosting in lens flare?
Ghosting refers to visible flare artifacts such as circles, polygons, rings, or colored shapes.
What is veiling flare?
Veiling flare is a wash of stray light that reduces contrast and makes blacks, colors, and fine detail look weaker.
How do I stop lens flare?
Change your shooting angle, use a lens hood, shade the front of the lens, keep the glass clean, and test whether removing a filter improves the result.
Can lens flare be used creatively?
Yes. Controlled flare can add warmth, softness, atmosphere, and a strong sense of backlighting when its placement supports the subject.
Lens Flare Is Really About Learning to Control Light
Lens flare becomes less mysterious once you stop thinking of it as one random glow that cameras sometimes create.
Look at the photograph carefully. Are you seeing colored ghost shapes? Has contrast disappeared under a pale veil? Is the bright star around the sun actually a sunstar rather than a flare?
Once you identify the effect, the next decision becomes much easier.
Block the light when clarity matters. Change your angle when a flare spot lands in the wrong place. Remove an unnecessary filter if it is adding reflections. Keep the flare when it gives the image warmth, energy, softness, or atmosphere that would disappear in a perfectly clean frame.
The strongest photographers do not simply avoid optical imperfections. They learn what creates them, how to control them, and when an imperfection can become part of the photograph.
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