Its not that big a diffuser. May look big on my M43 camera But yes you could use a smaller diffuser. I just bought a flash bracket and picked up a couple of smaller diffusers. One of them is about 1/4 the size. Have not had a chance to try it out yet. I think what is important is how well it diffuses. There is also a lot of sites that show you how to make your own diffuser with stuff around the house.