Dell 2400MP Projector - Manual (Page 16)

16 Using Your Projector
Adjusting the Projector Zoom and Focus
CAUTION: To avoid damaging the projector, ensure that the zoom lens and
elevator foot are fully retracted before moving the projector or placing the
projector in its carrying case.
1 Rotate the zoom tab to zoom in and out.
2 Rotate the focus ring until the image is clear. The projector focuses at distances
from 3.9 ft to 39.4 ft (1.2 m to 12 m).
1 Zoom tab
2 Focus ring