Technical information

AVT GigE camera and driver features
AVT GigE Camera and Drivers Features V2.0.0
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This document is a master document for all AVT GigE camera models and is NOT camera specific
Iris
Auto iris lens support. Supported auto iris lens types (camera dependent):
video, DC, and P-Iris. GT series detects lens type on power up. DC settings will
not apply if P-Iris lens connected. P-Iris settings will not apply if DC-Iris lens
connected.
The auto iris algorithm calculates IrisAutoTarget based on information of
the current image, and applies this to the next image. Large changes in scene
lighting may require 2-3 frames for the algorithm to stabilize. Adding simulta-
neous GainAuto = Continuous, or ExposureAuto = Continuous, to
IrisMode = Video/DCIris/PIrisAuto results in undefined, “race to
target” behavior.
IrisAutoTarget [Integer] R/W
Controls the general lightness or darkness of the auto iris feature; specifically
the target mean histogram level of the image—0 being black, 100 being white.
IrisMode [Enum] R/W
Sets the auto iris mode.
IrisVideoLevel [Integer] R
Current video iris level, which is the strength of the video signal coming from
the camera. Dependent on lens type.
Note

The camera must be acquiring images in
order for the auto algorithm to update.
Range: [0–100] Default: 50 Units: Percent
Disabled [Default] Disable auto iris
Video Enable video iris. Video-type lenses only
VideoOpen Fully open a video iris. Video-type lenses only
VideoClose Full close a video iris. Video-type lenses only
PIrisAuto Enable precise auto iris. P-Iris lenses only
PIrisManual Manually control iris via LensPIrisPosition
feature. P-Iris lenses only
DCIris Enable DC auto iris. DC-Iris lenses only
Range: [0–150] Default: 0 Units: mV pp
Lens type Range Description
Video-type
lenses
[0–150] Reference voltage. This value should fall
between IrisVideoLevelMin and
IrisVideoLevelMax
P-Iris lenses [0–100] Attempts to match IrisAutoTarget
DC-Iris lenses [0–100] Attempts to match IrisAutoTarget