Vivotek S Series IZ9361-EH 1080p Outdoor Network Bullet Camera with Heater - Manual (Page 66)

VIVOTEK
66 - User's Manual
- Shutter Priority: When selected, the Exposure time slide bar will appear, allowing you to
select an exposure time ranging from 1/32,000, to 1/8 second. Once a fixed value is selected,
system firmware will automatically tune the gain and iris settings to match an optimal exposure
level.
- Iris Priority: When selected, the Iris adjustment slide bar will appear, allowing you to select
an aperture size ranging from F16 to F1.6. Once a fixed value is selected, system firmware will
automatically tune the gain and exposure time to match an optimal exposure level. The value is
measured in the F-number as the ratio of the focal length to the lens diameter. Iris size is inversely
proportional to the F-number; therefore, the smaller the F-number, the greater is the exposure
ratio. Smaller F-number (larger exposure ratio, largest size of lens aperture opening) is shown on
the right of the slide bar.
- Manual : Select Manual to set a fixed exposure time, iris, and gain. Then, tune the slide bar
to set the Exposure time, Iris adjustment, and Gain Control to the best image quality. A shorter
exposure time allows less amount of light to enter the sensor; while a higher gain control value
generates certain amount of noises.
Note the following when the Manual mode is selected:
1. The Exposure level bar will not be available.
2. The IR cut filter setting will switch to Day Mode . If it was previously configured into other
modes, the previous setting remains intact.
Exposure control:
■ Exposure level : You can manually set the Exposure level, which ranges from -0.7 to +0.7
(dark to bright). You can also select other values from the Exposure mode menus and select
a preferred scenario or manually configure the associated settings. You may prefer a shorter
shutter time to better capture moving objects, while a faster shutter reduces light and needs to be
compensated by electrical brightness gains.
■ Exposure mode :
Select Auto, Shutter Priority, Iris Priority, or Manual mode according to your needs.
- Auto: System default, which automatically adjusts the iris, shutter speed, and gain for an
optimmal exposure level.
Manual : Note that WDR and Defog functions will be disabled using the Manual mode
setting.
• When Iris Priority is selected for the Exposure mode , the tunable aperture size is related to
zoom ratio. When using different zoom ratios, the range of aperture sizes can be different. When
zoom ratio is 0x, the range of iris sizes is F1.6~F16. When zoom ratio is 20x, the iris size is F3.4.
NOTE: