Color & Light
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Digital Photography Equipment
Diffusion Techniques; Softening Accessories
I have made the point that on-camera flash is not the most attractive artificial light for photography. In fact, I’d say it’s at or near the bottom of my list for choosing artificial light sources to illuminate the subjects I photograph. If I can’t take the flash off the camera and I’m forced to use on-camera flash, then the best approach is to diffuse the light. There are various ways to do this. Some diffusion techniques require a modest expenditure while others don’t cost anything.
White Packing Material: An advantage of using this kind of plastic as the diffusing material is that it can be packed into a camera bag and it takes up no room, it’s weightless, and it can be used again and again. You can attach it to the flash head with a rubber band or a hook and loop fastener strip (#2) and use it as I’ve show here—where the flash head is pointing up into the plastic to bounce the light at the subject. Admittedly, if you are a professional wedding or portrait photographer, this may not impress your clients. However, it works just as well as commercially available diffusion products.
80-20 Bounce Card: A unique product from Lumiquest (www.lumiquest.com) is a card that affixes to the head of your flash with a hook and loop fastener strip (#3) and it allows 80 percent of the light to bounce and at the same time it sends 20 percent of the light directly at the subject. The result is an effective way of having a subtle front light along with a softer light that comprises most of the illumination.
Manufactured Diffusers: You can purchase commercially available plastic diffusers that fit over the flash head and soften the light. These look professional (if that’s important to you), and they do an excellent job. One of my favorites is the Omni-Bounce (www.stofen.com) (#4) because it’s small, compact, and it does an excellent job at softening the light.
There are numerous other “flash diffusers” you can use. They all do basically the same thing—the frosted plastic spreads the light across your subject in a way that makes on-camera flash more appealing than if the diffusers had not been used.
Mini Softbox: Similar to studio softboxes which are placed in front of powerful strobe heads in the studio to soften the light. The mini softbox (#5) made by the Dotline Corporation (www.dotlinecorp.com) fits over a portable flash and spreads the light over the subject. It does a great job at simulating a studio. Another Dotline product is the pocket flash diffuser (#6). As with all these diffusion devices, it is more effective the closer it is used to the subject. The further away it is, the more it becomes a point source of light and the diffusion effect is lessened. The mini softbox and the pocket flash diffuser are very useful for head and shoulder portraits and close-ups of flowers and other macro subjects. There is a small amount of light loss. Both products are made of soft fabric that folds down into virtually nothing, and they can pack easily into any photo bag or backpack.