The quality of illumination is conclusive for an inexpensive studio lighting. For good operational autonomy, it is useful to use with lithium-ion batteries recommended. Because of the wide angle covered, corresponding to use in video, photo studio can easily build a small light box without diffusing screen which reduces the angle covered. Some examples extrapolated to the projector are shown in the book "Making his photographic lighting accessory" of Cirill Harnischmacher, the VM editions. The "cardboard pen" used in visual arts is ideal for this kind of realization.
