When you turn off the projector by pressing the power button, Zoom Memory remembers the current projection size and focal distance, and restores them the next time you turn power back on.
Use this feature when the projector position and screen position are fixed, and the projection size and focal distance does not change.
If you turn off the projector by unplugging it without pressing the power key, the projection size and focal size that was remembered the last time you turned off by pressing the power button will be restored the next time you turn power back on.
