Angle of tilt: 30° for vertical illuminance.
Sculpture lens pattern: horizontal for the illumination of vertical objects
Sculpture lens pattern: vertical for uniform wall illumination
Luminaire spacing: depends on the texture of the wall surface and on the required uniformity of the lighting
When projecting images, consider distortion
Angle of tilt 20°
Offset from wall: intersection of the 20° line with the ceiling plane
Luminaire spacing: up to 1.5x offset from wall