User's Guide

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Operating instructions
Auto Iris
Auto Iris
When the amount of light in the scene varies (for example when shooting outdoors) the
Auto Iris function can be switches on to automatically and continuously measure light
levels and adjust Iris for optimal exposure.
When your lens has an Auto Iris switch, make sure it is set to the on position.
To switch Auto Iris on, go to the Production Setup > Exposure > Iris > Auto Iris menu
and set the
Auto IRIS function to On.
The default settings for Auto Iris are suitable for most situations but some situations may
require different settings.
Setting the Auto Iris measurement area
The user level must be set to Service to access this function.
Select the Auto Iris measurement area using the Area function in the Auto IRIS menu. The
following areas can be selected:
• Top—covers the top half of the screen, or 50% of the total surface. This is the default
setting.
• Spot S—small center spot, covers 5%.
• Spot M—medium center spot covers 10%.
• Spot L—large center spot, covers 25%.
• Full—full screen measurement, covers 100%.
• Bottom—covers the lower half of the screen, or 50% of the total surface.
• Custom—a customer defined measurement area.
When Area is set to Custom, a customer defined area can be defined under the Custom
Area
sub menu by entering top, bottom, left and right parameters for two separate
measurement areas: one for Peak and one for Average values. Auto Iris combines the
readings from these two areas and uses the outcome to control the Iris opening.
Top
Bottom
Spot L
Spot M
Spot S
Full