Adjusting the Iris

Adjust the aperture of the lens iris according to the brightness of the subject.

Manual Iris (Manual Adjustment) Mode

The aperture value (F-number) of the lens can be set manually.

Set Full Auto mode to off using the user button assigned with “Full Auto”.
Set to Manual Iris mode using the [IRIS A/M] switch on the lens.

The lens aperture value (F-number) is displayed.

GY-HC900_ManualIris
Turn the iris ring on the lens to adjust the iris manually.

The open F-number of the aperture varies according to the zoom position.

F-number

Description

Decrease

The subject appears brighter.
The focused range becomes sharper, while the background is blurred to produce a soft image.

Increase

The subject appears darker.
Background of image becomes focused as well.
Memo

Even while in the Manual Iris mode, pressing and holding the [IRIS] button on the lens switches the camera recorder to the Push Auto Iris mode.

Push Auto Iris

When the camera recorder is in the Manual Iris mode, press and hold the [IRIS] button on the lens to change to the Auto Iris mode temporarily. The iris will be automatically adjusted according to the brightness of the subject.

Auto Iris (Automatic Adjustment) Mode

Set Full Auto mode to off using the user button assigned with “Full Auto”.
Set to Auto Iris mode using the [IRIS A/M] switch on the lens.

The iris is automatically adjusted according to the brightness of the object.
A FULL_AUTO_ON icon appears on the left side of the lens aperture value (F-number) in the Auto Iris mode.

Memo

Use the user button assigned with “Full Auto” to enter the Full Auto mode also activates the Auto Iris mode. In this case, the Gain, Shutter and White Balance also enter into Auto mode forcibly.
The iris operation during Full Auto mode can be configured in [Camera Function] arrowR [Full Auto] arrowR [Iris Control].

The iris open/close limit can be set in [Camera Function] arrowR [Auto Iris Limit (OPEN)]/[Auto Iris Limit (CLOSE)] during Auto Iris.

Auto Iris Limit (OPEN)
Auto Iris Limit (CLOSE)

You can press the user button assigned with “AE Level” and use the cross-shaped button ( U_botton D_botton ) to configured the target level (brighter/darker) of the auto iris in [Camera Function] arrowR [AE Level].

The convergence speed of the auto iris can be set in the menu.

AE Speed

While in the Auto Iris mode, and [AE Lock] is set to “AE” or “AE/FAW”, a FAW_LOCK icon appears on the left side of the lens aperture value (F-number) during lock operation.