Take a custom flash photo
Make a simple flash diffuser or colored gel, attach it to a camera or phone, and take custom-lit photos to explore light and color.
About this activity
Make a simple flash diffuser or colored gel, attach it to a camera or phone, and take custom-lit photos to explore light and color.
What you need
Step by step
- 1
Step 1
Find a clear flat workspace and lay out all your materials so you can reach them easily.
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Step 2
Cut a square of translucent plastic or wax paper about 3 inches by 3 inches to make your diffuser.
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Step 3
Cut two small squares of colored cellophane about the same size as the translucent square.
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Step 4
Tape one colored cellophane square to the edge of the translucent square so it can flip over the diffuser.
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Step 5
Hold the taped diffuser over your phone or camera flash and position it so the colored part covers the flash area.
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Step 6
Check carefully that the diffuser does not cover the camera lens and only sits over the flash.
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Step 7
Secure the diffuser in place by stretching a rubber band around the phone or camera body so it holds the diffuser steady.
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Step 8
Open your camera app and set the flash to ON or AUTO so the flash will fire with each photo.
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Step 9
Take a test photo with the diffuser attached to see the soft or colored light effect.
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Step 10
Flip the colored cellophane to a different color or swap in another color square to change the light color.
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Step 11
Take another photo to compare the new color and see how light and color change your picture.
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Step 12
Share your favorite custom-lit photo and a short note about your diffuser on DIY.org.
Fun facts
How do I make and use a simple flash diffuser or colored gel to take custom-lit photos?
Create a diffuser by cutting tracing paper, wax paper, or a coffee filter slightly larger than the flash. Secure it with tape or a rubber band so it covers the flash without touching the bulb. For colored gels, layer cellophane between two pieces of clear tape. Point the flash at the subject, take test shots, and adjust distance and angle to soften shadows or tint light. Allow external flashes to cool before handling.
What materials do I need to make a flash diffuser or colored gel for phone or camera photos?
You’ll need a camera or phone with flash, tracing paper/wax paper/tissue or a white plastic bag for diffusion, colored cellophane for gels, scissors, clear tape and rubber bands to mount the diffuser, and a small piece of cardboard to make a frame. Optional items: external flash or portable LED, white index card for bounce, and a camera app with exposure control.
What ages is making a flash diffuser and taking custom-lit photos suitable for?
This activity suits children about 6 years and up with adult supervision. Younger kids (3–5) can explore colors and take photos while an adult handles cutting, tape, and the flash. Older children and teens (10+) can assemble mounts, test exposures, and experiment independently. Always supervise scissors and any hot or powerful external flash units, and keep small parts away from very young children.
What are the benefits of making flash diffusers and colored gels with kids?
This hands-on activity teaches basic light concepts like diffusion, color mixing, and shadow control while encouraging creativity and observation. It builds fine-motor skills, problem-solving, and introductory photography knowledge (exposure, white balance). Low-cost materials make it accessible, and experimenting with positions and colors develops curiosity and teamwork. It’s a playful STEAM activity that produces visible, immediate results to discuss and improve together.
Watch & Learn
Need help?
What can we use instead of translucent plastic, wax paper, or colored cellophane if those are hard to find?
Use a 3×3-inch square of tracing paper or thin parchment as the diffuser and replace colored cellophane with tissue paper or colored clear plastic wrap, taping the color to the edge and securing with the rubber band as the instructions say.
My photos are blurry or too dark—what might be going wrong and how do I fix it?
Make sure the diffuser is covering only the flash and not the camera lens as the instructions warn, and if the light is too dim try a thinner translucent square, move the diffuser slightly farther from the flash, or tighten the rubber band so the diffuser doesn't sag.
How can we adapt the activity for younger kids or make it more challenging for older kids?
For younger children have an adult pre-cut the 3×3-inch squares and attach the cellophane with tape or a clothespin during the rubber-band step, while older kids can layer colors, change the distance from the flash, or swap multiple colored squares to compare photos.
How can we extend or personalize the custom flash photos to make them more creative?
Personalize the diffuser by drawing small patterns on the translucent square with a permanent marker or cutting shapes into the cellophane before taping so the colored patterns appear in the photos, then share favorite results and notes on DIY.org as suggested.