Fits not only to Canon and Nikon DSLRs, but also in almost every other DSLR and mirrorless system cameras or bridge cameras with DSLR-like body style. It is important that a switch located to the hot shoe around high folding flash and a standard hot shoe (not that of (Konica) Minolta and the old Sony DSLRs) is available. I have the Panasonic Lumix G6 (Micro Four Thirds) and because the diffuser fits perfectly. Does not fit with cameras without internal flash (with the included mini-compact flash) or System cameras in rangefinder-style.
He keeps very well on the camera and actually soaked the harsh flashlight of internal Mini flash on by the luminous area is enlarged to 10x10 cm. When not in use, it fits folded flat everywhere. In the not too distant subjects and a modern camera, which you can use high ISO values, which one often saves the chunky external flash. Very nice if you (... Micro Four Thirds, Bridge) uses a relatively small body.