Sanyo VA-80AB Datasheet download pdf (Page 37)

WDR IPLens

Dome SpecialtyDVR CS mount Pan-focusSSP SystemMonitor

Lens

1.7m

1.3m

5.1m

3.9m

8.6m

6.4m

14m

10m

1.2m

0.90m

3.6m

2.7m

6.0m

4.5m

9.6m

7.2m

0.8m

0.6m

2,4m

1.8m

4.0m

3.0m

6.4m

4.8m

0.6m

0.45m

1.8m

1.4m

3.0m

2.3m

4.8m

3.6m

0.13m

0.09m

0.38m

0.28m

0.63m

0.47m

1.01m

0.76m

0.08m

0.06m

0.25m

0.19m

0.41m

0.31m

0.66m

0.50m

VA-13VG308ASIR

1.8m

1.35m

17m

13m

12m

4.5m

1.26m

0.95m

0.83m

0.62m

34m

26m

24m

18m

12m

2.5m

1.9m

1.7m

1.2m

51m

39m

36m

27m

18m

14m

3.8m

2.8m

2.5m

1.9m

86m

64m

60m

45m

30m

23m

6.3m

4.7m

4.1m

3.1m

100

171m

129m

120m

90m

16m

12m

24m

18m

40m

30m

80m

60m

45m

12.6m

9.5m

8.3m

6.2m

Distance between lens and subject

*Images produced by the camera may differ slightly from above images

Wide angle f = 4 mm Wide angle f = 6 mm Standard f = 8 mm Telephotographic f = 38 mmSuper wide angle f = 2.8 mm

f = 58 mm

VA-13VG308AS

VA-13VG550T-LY

*Nearest distance: 1.0 m Wide 0.3 m

VA-13VG2811ASIR

VA-13VG308ASIR

Example:

For a lens of F1.2,

use the value of 1.0 lx

which is obtained by

actual measurement.

When using a lens of F1.4:

1.0 x= 1.4 lx

( )

1.2

1.4

When using a lens of F1.6:

1.0 x= 1.8 lx

( )

1.2

1.6

F1.2, 50IRE

1.0 lx

F1.2, 20IRE

For a comparison of minimum subject illumination:

Standard minimum

subject illumination

Target F value

Lens F value used for measurement

()

1.0 x =0.4 lx

1.4 x =0.56 lx

( )

1.2

1.4

1.0 x =1.4 lx

1.8 x =0.56 lx

( )

1.2

1.6

1.0 x =1.8 lx

The amount of light passed through a lens is expressed by a value

called “aperture value” (F value or F number). When the aperture is

fully open (maximum aperture), the maximum amount of light is

passed through the lens. This is the lens’ brightness and is

expressed by the “maximum aperture F value”. The maximum

aperture F value is obtained by dividing the focal length with the lens

diameter (D). The capital letter “F” is used to distinguish it from “f”,

which means the focal length.

SANYO deﬁnes the minimum subject

illumination to be the level that

produces the signal level of 50 IRE in

measuring camera performance.

Always conﬁrm the F value and the IRE level used in the

measurement. If the F value and the IRE level do not

match, then convert the values in camera speciﬁcations

using the following method.

Formula for determining the minimum subject

illumination for different F value

F1.4,

20IRE

F1.4,

50IRE

F1.6,

20IRE

F1.6,

50IRE

Te chnical Notes

lens for 1/3" CCD camera

Image Range at a Glance

Standard Vari-focal IR Lens

for 1/3” CCD Camera

VA-13VG2811ASIR

Standard Vari-focal IR Lens

for 1/3” CCD Camera

VA-13VG308ASIR

Tele Vari-focal Lens for

1/3” CCD Camera

VA-13VG 5 50T-LY

Standard Vari-focal Lens for

1/3” CCD Camera

VA-13VG308AS

Application 1/3" CCD camera 1/3" CCD camera 1/3" CCD camera 1/3" CCD camera

Mounting system CS mount CS mount CS mount CS mount

EE AMP not equipped not equipped not equipped not equipped

Focal length f = 2.8 to 11 mm f = 3.0 to 8 mm f = 5 to 50 mm f = 3.0 to 8 mm

Max. caliber rate F1.4 to 2.6 F1.2 F1.4 to 2.0 F1.2

Horizontal shooting angle

1/3" = 97.4° to 26.2°, 1/4"= 72.4° to 19.7°

34.8° 66.8° 34.8°

Vertical shooting angle

1/3" = 72.4° to 19.7°, 1/4"= 54.0° to 14.7°

26.0° 40.3° 26.0°

Nearest distance 0.3 m 0.3 m Tele 1.0 m Wide 0.3 m 0.3 m

Iris connecting plug 4-pin 4-pin 4-pin 4-pin

External dimensions 52.5(W) x 64.6(H) x 40(D) mm 55.6(W) x 44.2(H) x 49.3(D) mm 41.0(W) x 53.7(H) x 59.2(D) mm 55.6(W) x 44.2(H) x 49.3(D) mm

Weight (approx.) 79 g [2.8 oz.] 67 g [2.4 oz.] 95 g [3.4 oz.] 67 g [2.4 oz.]

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Sanyo VA-80AB Datasheet Page 37

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