0.6 gain
Reflects less light toward the measurement direction than a 1.0 reference, often trading raw brightness for darker blacks or wider distribution depending on the material.
FOUNDATIONAL GUIDE
Projector screen gain explained without the jargon
Screen gain describes relative reflected brightness compared with a reference surface under defined conditions. It is useful—but only when you also consider viewing angle, ambient light and projector output.
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A simple way to read gain
1.0 gain
Acts as the broad reference point. It does not mean “perfect” and says nothing by itself about ambient-light rejection.
1.2 gain
Can deliver more measured brightness in the designed viewing direction, often with greater directionality.
Higher gain can be useful
It can help maintain punch on a very large screen or when you want more on-axis brightness from a UST setup.
Higher gain can also narrow the sweet spot
When a surface concentrates light, viewers farther from the preferred direction may see less brightness or uniformity.
Read gain with ALR and viewing angle
Three numbers belong together: gain tells you about directional brightness, ALR tells you about unwanted light rejection, and viewing angle tells you how broadly the useful image is distributed. A buying decision based on only one of them is incomplete.