User manual

Running the Demonstration
XAPP794 (v1.3) December 20, 2013 www.xilinx.com 17
Adjusting the Lens
The content captured by the image sensor and processed by the image processing pipeline
should be visible on the monitor. If the image is blurry, adjust the lens focus, which ranges from
1 cm to 150 cm. If the image is too dark or too light, adjust the aperture (Figure 15). If the image
is black, the aperture should be adjusted to allow more light to enter the image sensor.
To adjust the focus, aperture, or both:
1. Unlock the set screws by loosening them on both the aperture and focus ring.
2. Twist until the desired result is achieved.
3. Lock the setting by tightening the set screw.
This kit includes an 8 mm lens that is appropriate for a broad range of video applications. If this
lens is incorrect for a specific application, determine the required field of view (FOV) using
these measurements:
• Distance to object (L)
• Size of object (H x V)
X-Ref Target - Figure 159
Figure 15: Adjusting the Focus and Aperture
Focus Aperture
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