Click
Here To Close This Window
The numbers listed below should be considered accurate to
within + / - 3° and therefore a few feet as well. This chart
is intended as an approximate guideline to help select the
appropriate lens.
|
Lens Focal
Length
|
Distance between video camera and the video
subject area
|
|
5' away
|
10' away
|
15' away
|
25' away
|
50' away
|
100' away
|
|
mm
|
Horz area
|
Vert area
|
Horz area
|
Vert area
|
Horz area
|
Vert area
|
Horz area
|
Vert area
|
Horz area
|
Vert area
|
Horz area
|
Vert area
|
|
2.45
|
17.3'
|
13'
|
34.6'
|
26'
|
51.9'
|
39'
|
86.5'
|
65'
|
173'
|
130'
|
346'
|
260'
|
|
2.80
|
14'
|
10.5'
|
28'
|
21'
|
42'
|
31.5'
|
70'
|
52.5'
|
140'
|
105'
|
280'
|
210'
|
|
2.97
|
12.3'
|
9.6'
|
24.6'
|
19.2'
|
36.9'
|
28.8'
|
61.5'
|
48'
|
123'
|
96'
|
246'
|
192'
|
|
3.60
|
7.5'
|
5.7'
|
15'
|
11.4'
|
22.5'
|
17.1'
|
37.5'
|
28.5'
|
75'
|
57'
|
150'
|
114'
|
|
3.70
|
7.3'
|
5.5'
|
14.6'
|
11'
|
21.9'
|
16.5'
|
36.5'
|
27.5'
|
73'
|
55'
|
146'
|
110'
|
|
4.0
|
6.6'
|
5'
|
13.2'
|
10'
|
19.8'
|
15'
|
33'
|
25'
|
66'
|
50'
|
132'
|
100'
|
|
4.30
|
6.1'
|
4.6'
|
12.2'
|
9.2'
|
18.3'
|
13.8'
|
30.5'
|
23'
|
61'
|
46'
|
122'
|
92'
|
|
5.0
|
4.7'
|
3.5'
|
9.4'
|
7'
|
14.1'
|
10.5'
|
23.5'
|
17.5'
|
47'
|
35'
|
94'
|
70'
|
|
6.0
|
3.8'
|
2.9'
|
7.6'
|
5.8'
|
11.4'
|
8.7'
|
19'
|
14.5'
|
38'
|
29'
|
76'
|
58'
|
|
8.0
|
2.9'
|
2.2'
|
5.8'
|
4.4'
|
8.7'
|
6.6'
|
14.5'
|
11'
|
29'
|
22'
|
58'
|
44'
|
|
12.0
|
1.9'
|
1.5'
|
3.8'
|
2.8'
|
5.7'
|
4.5'
|
9.5'
|
7.5'
|
19'
|
15'
|
38'
|
28'
|
|
16.0
|
1.4'
|
1.1'
|
2.8'
|
2.2'
|
4.2'
|
3.3'
|
7'
|
5.5'
|
14'
|
11'
|
28'
|
22'
|
|
25.0
|
1'
|
0.7'
|
2'
|
1.4'
|
3'
|
2.1'
|
5'
|
3.5'
|
10'
|
7'
|
20'
|
14'
|
|
50.0
|
0.4'
|
0.3'
|
0.8'
|
0.6'
|
1.2'
|
0.9'
|
2'
|
1.5'
|
4'
|
3'
|
8'
|
6'
|
Click
Here To Close This Window
