Axis Communications 2420 W/Lens - Manual (Page 57)

AXIS 2420 User’s Manual Lenses and Advanced Focusing 57
5. Finally, turn the lens slowly towards the Far-focus (F,
∞
) position, until the Status
Indicator displays Green; that is, until a Good level of focus is achieved.
Notes: •A Good level of focus is normally achievable throughout several planes within the focusing
range of the camera.
•The Status Indicator displays Green to indicate a Good level of focus at 80% of optimum focus.
•Since optimum focusing is dependent upon the camera’s field of view, it is important to scan
the focusing plane from the furthest to the closest perspectives before attempting any
fine-tuning.
6. Return to your browser and review the picture quality. Repeat step 5 only if you
consider the focal distance too distant - until you are satisfied with both the
focal-distance and focus-quality.
7. To exit the Focus Assistant: press and hold the Control button - until the Status
Indicator flashes Yellow. The Status Indicator displays Green when the Focus Assistant
is closed.
Adjusting the DC-Iris Settings
The DC-Iris settings must be adjusted to meet the requirements of the lens you intend to
use. You will need to modify the Exposure Control and other related settings for your
camera, from the Image-Advanced page.
Use the information presented in the following tables to choose the appropriate settings for
your lens type.
Caution!
Exposing your camera to bright sunlight may cause permanent damage to the CCD if you:
• install and use a non-DC Iris lens with the product, or
• select anything other than DC-Iris in the Exposure Control settings of the Image - Advanced page.
Axis consequently advises extreme caution when changing the lens and/or when using the Advanced
settings. Damage caused to the AXIS 2420 through overexposure to direct sunlight or halogen light is
not covered under the product warranty.