CBC ZC-PT218 Manual De Usuario

 
   

                             

User’s Manual 

 

 

24

•  AUTO 

In this mode, the camera’s shutter, IRIS and AGC control functions work 
together automatically to adjust the light exposure of the image sensor in 
order to obtain a consistent video output level. IRIS OFF SET is used to set 
the level of IRIS variation.

 

 

•  SHUTTER 

This option means that the SHUTTER setting takes priority over IRIS and 
AGC; the IRIS and AGC circuits will function automatically in conjunction with 
the set shutter speed to obtain a consistent exposure. 

 

 

•  IRIS 

This option means that the IRIS setting takes priority over SHUTTER and 
AGC; the SHUTTER and AGC circuits will function automatically in 
conjunction with the IRIS setting to obtain a consistent exposure. If the IRIS 
setting is modified manually, exposure compensation depends on the AGC 
circuit.

 

 

•  AGC 

This option means that the AGC setting takes priority over SHUTTER and 
IRIS; the SHUTTER and IRIS circuits will function automatically in conjunction 
with the AGC setting to obtain a consistent exposure. If the AGC setting is 
modified manually, exposure compensation depends on changing the IRIS 
setting.

 

 

A digital camera needs to find a reference colour temperature, which is a way of 
measuring the quality of a light source, in order to correctly calculate all the other 
colours. The unit for measuring this ratio is degrees Kelvin (K). You can select one of 
the white balance control modes depending on the conditions. The following table 
shows the colour temperature of some light sources.

 

 

 

Cloudy sky   

6,000 to 8,000   

Noon sun and clear sky   

6,500   

Household lighting   

2,500 to 3,000   

75 watt bulb   

2,820   

Candle flame   

1,200 to 1,500