How to Create Beams of Light and Lens Flare in Photoshop

How to Create Beams of Light and Lens Flare in Photoshop

A backlit photo already has the raw ingredient a lens flare effect needs: light pointing straight into the camera. This tutorial builds that effect entirely with Curves adjustment layers, tinting the shadows, painting in colored flare circles, creating light rays with a Radial Blur, and finishing with a custom vignette that pulls the eye toward the light source.

Checking That the Image Has Backlight

This technique only works on a specific kind of lighting setup, so it’s worth confirming before starting.

1. Confirm the Light Is Coming From Behind the Subject

   Look for light coming from behind the subject toward the camera, such as a strobe placed behind them, rather than light coming from the same direction as the camera.

Why This Effect Needs Backlight to Work

A lens flare and its related lighting effects only happen when light is entering the camera itself, which is exactly what backlighting does. Front lighting, where the light source sits in the same direction as the camera, never creates that same kind of flare, so this technique should be reserved for images that already have a light shining toward the lens.

Tinting the Shadows With a Curves Layer

Real lens flares rarely have true black in them — they tend to shift toward a deep red or green instead, so the first step recreates that in the shadows.

2. Add a Curves Adjustment Layer

   Add a Curves adjustment layer above the image.

3. Raise the Red Channel’s Black Point

   Switch from the RGB channel to the Red channel and drag the bottom-left point of the curve up, which replaces pure black with a deep red instead.

4. Bring the Green Channel Up to Balance It

   Switch to the Green channel and raise it slightly so the red and green tint work together rather than looking one-sided.

5. Invert the Mask and Paint the Tint Back In

   Press Cmd/Ctrl+I to invert the layer mask to black, then use a soft brush at around 20% flow to gradually paint the tint back in around where the flare will sit.

6. Brighten the Effect Slightly

   Go back to the RGB channel and raise it a little so the tinted area reads as light as well as color.

Painting Colored Flare Circles With a Second Curves Layer

The classic ring-shaped flare artifacts come from another Curves layer, this time pushed toward yellow and orange and painted in as distinct dots.

7. Add Another Curves Adjustment Layer

   Add a new Curves adjustment layer above the first one.

8. Pull the Blue Channel Down

   Switch to the Blue channel and drag it down slightly, which shifts the image toward yellow since blue and yellow are opposites on the curve.

9. Raise the Red Channel

   Switch to the Red channel and bring it up a bit to add warmth alongside the yellow shift.

10. Invert the Mask and Paint Hard-Edged Circles

    Press Cmd/Ctrl+I to invert the mask, raise the brush hardness to around 90%, and click in a few places to stamp in small circular flare shapes.

11. Tone Down Any Circle That’s Too Strong

    If a circle looks too saturated, adjust the Blue channel further on that layer, or lower the layer’s opacity until it sits naturally with the rest of the image.

Why Curves Adjustments Stay Editable After the Fact

One of the advantages of building this effect with Curves is that nothing has to be perfect on the first attempt. Because the adjustment lives on its own layer, going back in and nudging a channel, or simply lowering the layer’s opacity, can tone down an effect that looked too strong without starting over.

Creating Light Rays With a Radial Blur

Small painted highlights become full light rays once a Radial Blur is applied directly to the layer mask.

12. Add a Third Curves Layer and Brighten It

    Add another Curves adjustment layer and brighten it, then invert its mask to hide the effect.

13. Paint Small White Dots With a Small Brush

    Use a small, hard brush to paint a scattering of small white dots onto the mask where the light rays should radiate from.

14. Apply Radial Blur in Zoom Mode

    With the mask selected, go to Filter > Blur > Radial Blur, choose Zoom rather than Spin, set a blur center near the light source, and click OK.

15. Repeat the Same Filter With Cmd/Ctrl+F

    Press Cmd/Ctrl+F to reapply the exact same Radial Blur again without reopening the dialog, building up stronger rays.

16. Refine the Mask With Black and White Paint

    Paint black on the mask to remove rays from areas where they look too strong, and paint white to add more where the effect should show through, such as between foreground elements.

17. Lower Brightness for a Subtler Effect

    Select the Curves adjustment itself and reduce its brightness if the rays feel too pronounced overall.

Why Zoom Mode Rather Than Spin Creates Light Rays

Radial Blur’s Zoom setting stretches pixels outward from a chosen center point, which is exactly the streaking look real light rays have as they radiate from a source. Spin mode instead rotates pixels in a circle around that point, producing a completely different, non-ray effect, so choosing Zoom specifically is what makes this step work.

Building a Custom Vignette to Frame the Light Source

A final pair of Curves layers brightens the area around the light and darkens the edges, drawing the eye toward the subject.

18. Add a Curves Layer and Brighten It

    Add a Curves adjustment layer and brighten it, ready to become the lightened center of the vignette.

19. Select the Elliptical Marquee and Draw a Circle

    Choose the Elliptical Marquee tool and draw a circle around the light source, then invert the mask and deselect so only that circular area is affected.

20. Blur the Mask With Gaussian Blur

    Go to Filter > Blur > Gaussian Blur and apply a large blur to the mask so the brightened area fades naturally rather than showing a hard circular edge.

21. Add a Second Curves Layer to Darken the Edges

    Add another Curves adjustment layer, darken it, and use the same elliptical selection and Gaussian Blur approach to fade the darkening in around the outer edges of the frame.

22. Reposition the Vignette if Needed

    Press Cmd/Ctrl+T to transform, move, and scale either vignette layer so the bright and dark areas aren’t perfectly centered if the subject sits off to one side.

Grouping the Effects and Comparing Before and After

A final group makes it easy to toggle the entire effect on and off to judge the result.

23. Group All the Lighting Layers Together

    Select every layer used to build the effect and press Cmd/Ctrl+G to group them.

24. Toggle the Group to Compare Before and After

    Turn the group’s visibility on and off to see how much the flare, light rays, and vignette change the overall feel of the image.

Why This Approach Works

Every part of this effect — the tinted shadows, the colored flare circles, the streaking light rays, and the custom vignette — comes from the same tool used in a different way each time: a Curves adjustment layer paired with a painted mask. Building the effect only on backlit images matters because that’s the only lighting condition that produces this look in a real camera, so the whole technique is really about recreating an optical phenomenon rather than inventing one from scratch. Because each piece lives on its own editable layer, nothing about the final intensity has to be decided in advance.

Final Thoughts

This entire lighting effect — flare circles, light rays, and vignette included — is built from nothing more than a handful of Curves layers, layer masks, and the brush tool. It’s worth trying on any photo with a strong backlight, since it takes a flat, straight-out-of-camera image and turns it into something that pulls the viewer’s eye directly toward the light and the subject standing in it.

Quick Reference: Keys, Menus and Settings

• Tint the blacksCurves: Red channel black point up, Green up a little, RGB a little brighter
• Paint it inCmd/Ctrl + I on the mask, soft brush, white, 20% flow
• Flare circlesCurves: Blue down, Red up; invert the mask, brush hardness about 90%, click to stamp
• Light raysWhite dots on the mask, Filter > Blur > Radial Blur, Zoom not Spin
• Repeat the filterCmd/Ctrl + F
• Custom vignetteElliptical Marquee on the mask, Filter > Blur > Gaussian Blur; Cmd/Ctrl + T to move
• Before and afterCmd/Ctrl + G to group, toggle the group

No AI, no generative credits.