Original image

35mm equivalent

22 mm

32 mm

43 mm

65 mm

135 mm

Focal length

4 mm

6 mm

8 mm

12 mm

25 mm

Aperture

2,0

2,0

2,0

2,0

2,5

Image angle horizontally

90°

60°

45°

31°

15°

Image angle vertically

67°

45°

34°

23°

11°

Distance 1 m

m

m

m

m

m

• Image width

2,0

1,1

0,8

0,5

0,3

• Image height

1,3

0,8

0,6

0,4

0,2

Distance 5 m

m

m

m

m

m

• Image width

10,0

5,7

4,1

2,7

1,3

• Image height

6,6

4,1

3,0

2,0

1,0

Distance 10 m

m

m

m

m

m

• Image width

20,0

11,5

8,2

5,5

2,6

• Image height

13,3

8,2

6,1

4,0

1,9

Distance 20 m

m

m

m

m

m

• Image width

40,0

23,0

16,4

11,0

5,2

• Image height

26,6

16,4

12,2

8,0

3,8

Distance 50 m

m

m

m

m

m

• Image width

100,0

57,5

41,0

27,5

13,0

• Image height

66,0

41,0

30,5

20,0

9,5

The focal lengths of MOBOTIX lenses do not reflect the actual focal length of the lenses, but the focal length ( Lxx mm) converted to 35 mm camera format. For example, the MOBOTIX Super Wide-Angle lens has an actual focal length of 4 mm. This would be the equivalent of 22 mm
on a 35 mm camera. This lens is thus called L22.

Since the image sensors in digital cameras have different sizes, converting to 35 mm camera as a known format provides for better comparing the image formats and the fields of vision of the different lenses. Another benefit is that you can easily set a 35 mm camera (analog or digital) to the same focal length (Lxx) to obtain the same field of vision. This approach greatly facilitates lens selection.