OD-T7 is specially designed for use with camera's pop-up flash.
Just mount the diffuser onto the hot shoe of your camera and it can soften the light emitted by the flash and help you to emit the hard shadows created by direct flash.
They are made of a translucent white material and fit over the top of the flash.
Diffuser Size: 69 x 22 x 43 mm approx. (L x W x H)