Optoma EH415ST User Manual page 53

User Controls
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When DynamicBlack
is On, and Brightness
Mode is set to Bright,
the Dynamic range
is 100%~30%. When
brightness mode is
on Eco. Mode, the
dynamic range is
80%~30%.
52
DynamicBlack
Select the DynamicBlack mode.
Lamp Reset
After replacing the lamp, reset the lamp counter to accurately
reflect the new lamp's life span.
1. Select Lamp Reset.
A confirmation screen displays.
2. Select Yes to reset the lamp counter to zero.