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简单的说，摄像机的镜头数值越大，看得越远、越窄；摄像机镜头的数值越小，看得越近、越宽。
|
镜头焦距(mm) |
1/3"芯片左右 |
1/3"芯片上下 |
1/4"芯片左右 |
1/4"芯片上下 |
|
2.5mm |
96.4° |
86.2 ° |
81.9° |
72.9° |
|
2.8mm |
89.9° |
79.8° |
75.6° |
66.8° |
|
3.6mm |
75.7° |
66° |
62.2° |
54.3° |
|
4mm |
69.9° |
60.7° |
57° |
49.5° |
|
6mm |
50° |
42.6° |
39.8° |
34.2° |
|
8mm |
38.5° |
32.6° |
30.4° |
26° |
|
12mm |
26.2° |
22.1° |
20.5° |
17.5° |
|
16mm |
19.8° |
16.6° |
15.4° |
13.2° |
|
30mm |
10.6° |
8.9° |
8.3° |
7° |
|
60mm |
5.3° |
4.5° |
4.1° |
3.5° |
|
100mm |
3.2° |
2.7° |
2.5° |
2.1° |
|
200mm |
1.6° |
1.3° |
1.2° |
1.1° |
常用摄像机镜头的广角范围：
|
焦距 |
规格 |
角度 |
|
2.1 mm小镜头 |
1/3 |
150° |
|
2.5 mm小镜头 |
1/3 |
130° |
|
2.8 mm小镜头 |
1/3 |
115° |
|
2.8 mm固定光圈 |
1/3 |
115° |
|
2.8 mm |
1/3 |
96° |
|
4 mm |
1/3 |
78° |
|
6 mm |
1/3 |
53° |
|
8 mm |
1/3 |
40° |
|
12 mm |
1/3 |
23° |
|
16 mm |
1/3 |
17° |
|
3.5-8 mm |
1/3 |
96°- 45° |
|
6-15 mm |
1/3 |
54°- 23° |
|
6-36mm 电动变倍镜头 |
1/3 |
51°- 9° |
|
8.5-51mm 电动变倍镜头 |
1/3 |
57°- 10° |
|
6-60mm 电动变倍镜头 |
1/3 |
52°- 6° |