International projectionist (Jan-Dec 1935)
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Table of Screen Image Sizes at Different Distances With Lenses of Varying Focal Lengths
Size of Picture Aperture: 0.825" x 0.600"
B.F.
In.
UO ft.
56 ft.
60 ft.
70 ft.
ao ft.
90 ft.
100 ft.
110 ft.
120 ft.
130 ft.
1UO
ft.
190 ft.
160 ft.
170 ft.
180 ft.
190 ft.
200 ft.
2.00*
16.4 11.9
20.5 14.9
24.6 17.9
28.8 20.9
32.9 23-9
37.0 26.9
4l.l
29.9
*5.3
32.9
2.25'
lM 10.6
18.3 13-3
22.0 16.0
25.6
16.6
29.2 21.2
32.9 23.9
36.6 26.6
40.2 29.2
43.9 31.9
%:l
2.50"
13-1 9.6
16. U 11.9
m
23.O 16.8
26.3 19.1
29.6
21.5
32.9 23.9
36.2 26.3
39.5 28.7
42.8 31.1
45.6 33.5
2.75"
12.0 6.7
15.0 10.9
17.9 13.0
20.9 15.2
23.? 17.4
26.9 19.6
29.9 21.8
32.9 23.9
36.0 26.1
19.0 28.3
42.0 30.5
45.0 32.7
48.1
34.9
3.00"
10.9 8.0
13.7
10.0
16.4 11.9
W.2 14.0
22.0 16.0
24.6
17.9
27.4 20.0
■*0.2 22.0
12.9 21.9
35.7 25.9
38.4 27.9
41.1
29.9
41.9
11.9
46.7 14.0
3-25"
10.1 7-3
12-7 9.2
15.2 u.o
17.7 12.8
20.2 14.7
22.8 16.6
25.3 18.4
27.8 20.3
30.4 22.1
32.9 21.9
35.5 25.8
18.0 27.6
40.5 29.5
»l3.0 11.3
4*. 6 n.i
3-50"
9.4 6.8
11.7
8.5
14.1 10.3
16.4 11.9
18.8
13.7
21.1 15.4
23.5 17.1
25-9 18.8
28.3 20.5
30.5 22.2
32.9
23.9
15.2 25.5
V.5 27.1
39.9 29.0
42.3 10.8
44.7
12.5
47.0 T4.2
3.75"
10.9 7.9
13.1 9.6
15.3 11.1
17.5 12.8
8:1
22.0 16.0
24.0 17.6
26.3 19.1
28.6 20.7
30.7 22.1
12.9 2T.9
15.2 25.6
17.1 ?7.2
19.":;
28.6
H.7 10.1
4t.9 11.9
4.00"
10.2 7.4
1?.3 8.9
14.-5 10.4
16.4 U.9
18. 5 1?.*
20.5 14.9
22.6 16. U
24.6 17.9
26.7 19.4
28.8 20.9
10.8 22.4
12.9 21.9
15.0 ?5.4
17.0
'6.9
19.1 ?8.4
41.1 29.9
U.2Z,*
9.7 7.1
H.7 8.5
13-5 9.8
15.5 11.2
17.4 12.7
19.3
i4.o
21.2 15.4
23.2 16.8
25.2 18.1
27.1 19.7
29.1 21.1
10.9 2?. 5
12.9 21.9
l'-l .9
25.1
16.8 26.8
18.8
U.50"
10.9 8.0
12.8 9-3
14.6 10.6
16.4 11.9
18. 3 13.3
20.1 14.6
22.0 16.0
23.7 17.2
25.6 18.6
27.4 20.0
29.2 21.2
11.0
12.9 23.9
•*4.<5 2*. 7
i«.6
26.6
4.75"
10.4 7-6
12.2 8.9
13.9 10.1
15.7
11.4
17.3 12.6
19.0 13.0
20.7 15.1
22.5 16.4
24.2 17.6
26.0 18.9
27.6 20.1
29.4 21.4
31.1
22.6
1?.9 21.9
i".7
2^.9
5.oo»
11.6 8.4
13.1
9-6
14.9 10.8
16.4 U.9
18.1 13.2
III
21.4 15.6
23.O 16.8
24.6 17.9
26.3 19.1
27.9 20.3
29.6 21.5
11.1 22.8
1?.9 21.9
5.25"
10.9 7.9
12.5 9-1
14.1 10.3
157 11.4
17.2 12.5
18.8 13.7
20.3 14.8
21.6 15.9
23.5 17.1
25.1 I6.3
26.7 19.4
28.3 20.5
29.8
?i.7
31.3 22.8
5-50"
10.5 7-6
12.0
8.7
13.5 9.8
15.0 10.9
16.4 11.9
17.9 13.0
19.4 14.1
20.9 15.2
22.4 16.1
23.9 17.4
25.4 18. 5'
26.9 19.6
28.4 ?0.6
29.9 ?1.8
5-75*
11.3 8.3
12.8 9.3
14.2 10.3
15.7 11.4
17-1 12.4
18.6 13.5
20.0 14.5
21.4 15.6
22.9 16.6
24.1 17.7
25.8 18.7
27.2 19.8
28.6 20.8
6.00"
10.9 8.0
l?.3 8.9
13.7 10.0
15.1 10.9
16.4 11.9
17. 8 13.0
19.2
i4.o
20.5 14.9
22.0 16.0
21.1 17.0
24.6
17. <»
26.0 18.9
27.4 20.0
6.?5"
10.5 7.7
11.9
8.6
13.1
9.5
1U.3 10.4
15.9 11.1
17.0 12.4
18.4
13.-3
19.7 14.1
21.0 15.1
22.1 16.2
21.6 17.2
25.0
18.1
26.1 19.1
6.50"
11.4
8.3
1?.7
9.2.
13.9 10.1
15.2 11.0
16.4 11. .9
17.7 12.8
16.9 13-7
20.2 14.7
21.5 15.6
22.8 16.6
24.0 17.5
?5.3 18.4
6.75"
10.9 7.9
12.? 8.8
13-4
9.8
14.6 10.6
15.9 11.6
17.0
12.4
\
18. 3 11.1
19.5 l4.?
20.7 15.1
22.0 16.0
21.2 16.9
24.4 17.8
7.00*
10.5 7.6
11.7
8.5
12.9 9.4
14.1
10. ■*
1^.1 ll.l
16.4 11.9
17.5 12.8
18.8 11.7
19.9 14.5
21.1
15.4
22.3 16.2
23-5 17.1
7.50"
10.9 7-9
12.0 8.7
13.1
9.6
14.? 10.3
15.1 11.1
16.4 11.9
17.5 12.8
I8.7 11.6
19.7 14.4
20.8 15.?
22.0 16.0
a. 00"
10.2 7.4
11.2
8.2
12.3
8.9
11.1
9.7
14.3 10.4
15.4 11.2
16.4 11.9
17.4 12.7
18.5 13.4
19.5 14.?
20.5 14.9
8. 50"
10.6 7.6
11.7
8.5
12.6 9.1
13.5 9.8
14. 5 10.5
15.5 11.2
16.4 U.9
17.4 12.7
18.4 13-4
19.3
i4.o
900"
11.0 8.0
11.8 8.6
12.8 9-3
13.7 10.0
14.6 10.6
15.5 11.3
16.4 11.9
17-3 12.6
18.3 13.3
1
E.r.
r In.
40 ft.
50 ft.
60 ft.
70 ft.
80
ft.
90 ft.
100
ft.
110
ft.
120
ft.
130
ft.
lUo
ft.
150
ft.
160 ft.
170 ft.
180 ft.
190 ft.
200 ft.
8IZE9 GIVER ARE TO THE NEARE8T TENTH OT A FOOT
Prepared especially for International Projectionist by Bausch & Lomb Optical Co.