My best flash accessory so far, really makes super Portraits! The shadows are really soft with the first part (nothing more to the ceiling or wall flashing ...). The best the Ezybox is suitable when 1-2m photographed from your subject. If you look further away, the effect of the softbox takes course from (irgenwann is it then a point light source .....). The box swallows approximately 2 aperture, which I also additionally use a diffuser on the flash. The zoom flash you should ask to Wide (manually).
It should be noted (this I had been viewed nirgens) that Ezybox for a small flash like the Canon EX430 is too large. Towers mounted on the camera, the box then the picture! So, you should already have an EX560 or replica. Since I own both flashes, it was now no problem for me - full marks because even first-class workmanship.