|22" beauty dish
|22" dish with diffusin sock
|22" dish with grid
|22" dish with grid and diffusion sock
The light, camera, model, and background positions remained the same for each test. The lens aperture was adjusted to maintain approximately the same exposure for each. The dish alone was at f/7.1. Dish with sock was f/5.6. Dish with grid was f/5.6. The grid and sock together sucked up a lot of light and that version was at f/2.0.
Obviously, the big aperture change for the last image contributes to the very different look (very shallow depth of field), so I also did the last example (dish and sock) with the strobe power turned up so I could be at f/5.6 and here is what that looks like...
|22" dish with sock and grid at f/5.6