Chapter 2 Getting Started — Setting up46 - ENGLISHFor PT-DX100ULens type Projection lens ModelNo. Aspect ratio Projection distance (L) formulaStandard zoom lens —4:3 Min. (LW) L = 1.4571 x SD - 0.0746Max. (LT) L = 2.0346 x SD - 0.072516:9 Min. (LW) L = 1.5875 x SD - 0.0746Max. (LT) L = 2.2167 x SD - 0.0725Fixed-focus lens ET-DLE055 4:3 — L = 0.6738 x SD - 0.047616:9 — L = 0.7340 x SD - 0.0476Ultra short focus zoom lens ET-DLE0854:3 Min. (LW) L = 0.6711 x SD - 0.0471Max. (LT) L = 0.8307 x SD - 0.044216:9 Min. (LW) L = 0.7311 x SD - 0.0471Max. (LT) L = 0.9051 x SD - 0.0442Short focus zoom lens ET-DLE1504:3 Min. (LW) L = 1.1006 x SD - 0.0540Max. (LT) L = 1.5878 x SD - 0.049816:9 Min. (LW) L = 1.1991 x SD - 0.0540Max. (LT) L = 1.7299 x SD - 0.0498Intermediate focus zoom lens ET-DLE2504:3 Min. (LW) L = 1.9224 x SD - 0.0800Max. (LT) L = 3.0361 x SD - 0.079216:9 Min. (LW) L = 2.0943 x SD - 0.0800Max. (LT) L = 3.3078 x SD - 0.0792Long focus zoom lens ET-DLE3504:3 Min. (LW) L = 3.0304 x SD - 0.1351Max. (LT) L = 4.5791 x SD - 0.134616:9 Min. (LW) L = 3.3015 x SD - 0.1351Max. (LT) L = 4.9888 x SD - 0.1346Ultra long focus zoom lens ET-DLE4504:3 Min. (LW) L = 4.5876 x SD - 0.3017Max. (LT) L = 7.2526 x SD - 0.299116:9 Min. (LW) L = 4.9981 x SD - 0.3017Max. (LT) L = 7.9015 x SD - 0.2991Adjusting adjustable feetInstall the projector on a flat surface so that the front of the projector is parallel to the screen surface and the projection screen is rectangular.If the screen is tilted downward, the projection screen can be adjusted to be rectangular by adjusting the front adjustable feet. The adjustablefeet can also be used to adjust the projector to be level when it is tilted in the horizontal direction.Extend the adjustable feet by rotating in the direction shown in the figure and retract by rotating in the opposite direction.Adjustable amountEach adjustable feet: Approx. 30 mm (1-3/16")Attentionf Heated air is expelled from the air exhaust port while the lamp is lit. Do not touch the air exhaust port directly when adjusting the adjustablefeet. (x page 26)