With fabric intended for the heat of a continuous light, the extra small Daylight Junior Plus 1 is ideal for a small fresnel light up to 750 Watts. It may also be used with a strobe. The extra depth of the Daylight (it's about 30% deeper than the video Pro Plus) allows the fresnel beam to spread out and cover the front face more evenly.
Its silver interior will provide s light quality more spectral with a faster gradation from highlight to shadow areas.
The "Plus" designation means you may remove the front face of the softbox if you like. This softbox comes with a one stop diffusion cloth. 1/2 and 1/4 grid cloths are available separately. Substituting a half or quarter diffusion or taking off the interior baffle would result in even more contrast, slightly more light transmission, and less softening of the light.