1. Before Setting Up Your Projector
25
How to Calculate the Magnification of Primary Lens
SCOPE projection:
Length of projection (L)
Primary lens
magnification =
Screen width (W) ÷Wide Converter lens magnification
Use 1x for wide converter lens magnification if this lens is not in use.
VISTA (FLAT)/HDTV projection:
Length of projection (L)
Primary lens
magnification =
Screen width (W) × (2048 ÷ Number of pixels per horizontal line)
Note: Number of pixels per horizontal line: 1998 for VISTA (FLAT); 1920 for HDTV
Select a lens that meets the magnification requirement for SCOPE, VISTA (FLAT), and HDTV
screen types.
Example of Primary Lens Calculation
If the “projection distance (L) = 30 m, the screen width (W) = 15 m” and the wide converter
lens is not used:
30m
SCOPE projection =
15m÷1
= 2.0x
30m
VISTA (FLAT) projection =
15m×(2048÷1998)
= 1.95x
30m
HDTV projection =
15m×(2048÷1920)
= 1.88x
Therefore, "L2K-18ZM", which satisfies the magnifications in all of the above projections, is
selected as the primary lens.
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