Graphic Projection Systems from DERKSEN (USA), INC.

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Lenses - Image Size Chart

Systems with Large Optics
GL700 and GL1200

(Image Size in Feet)

Distance
in Feet

Wide Angle
135 mm

Standard
150 mm

Tele
241 mm

Tele
318 mm

3

x

x

x

x

6

x

x

x

x

9

4.60

x

x

x

12

6.36

4.89

x

x

15

8.22

6.20

4.46

x

18

9.76

7.51

5.35

4.04

21

11.48

8.83

6.20

4.75

24

13.18

10.14

7.09

5.46

27

14.89

11.45

7.95

6.18

30

16.59

12.76

8.83

6.90

36

20.00

15.39

10.57

8.33

45

25.12

19.32

13.19

10.47

60

33.66

25.89

17.55

14.06

90

x

39.00

26.28

21.20

120

x

52.13

35.00

 28.30

150

x

65.25

43.75

 35.50

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