g. To achieve uniform lighting, it is better to set the lights away from the original. The center of
the beam of light is generally brighter than the outside, so if lights are brought in too close, the center of
the original (fig 3-8) may be brighter than the edge or corners. Distance does reduce the overall
brightness but it makes the illumination more uniform (fig 2-9). You can also increase uniformity by
placing white tissue paper over the light, thereby diffusing the light.
Figure 3-8. Uneven lighting
Figure 3-9. More distant uniform lighting