Basler Aviator Camera Link Installation And Setup Manual page 29

5 Adjusting Image Quality
In the following descriptions, image quality is discussed in terms of focus, depth of focus, brightness
and contrast. You can adjust image quality with regard to these criteria by choosing appropriate
settings. However, the "best" image quality will depend on the specific requirements of your
application and therefore no generally applicable "best" settings can be recommended.
The adjustments will involve the following:
Adjusting the brightness of the illumination
Adjusting the focus
Setting the lens aperture
Setting the gain
Setting the black level
Setting the exposure time
We recommend carrying out all fine adjustments with the illumination that you will be using in your
actual application.
You should be aware that your choice of lens is a major factor in determining image quality.
Using a high quality lens will give you much better images than using a low quality lens. If you need
assistance in determining the best lens for your application, contact Basler technical support. The
contact numbers appear in the title pages of this manual.
Focus:
You will obtain a focused image only if the lens is correctly mounted on the lens adapter of the
camera and if the glass surfaces are clean. The object to be imaged must be within the range of
focus of the lens.
You can obtain a focused image by turning the focal ring on the lens.
Depth of Focus:
If the objects you want to image are located at different distances from the camera, you must
consider depth of focus. The depth of focus must be sufficiently deep to allow all objects to appear
focused in the image.
You can change the depth of focus by turning the aperture ring on the lens. Closing the lens
aperture (turning the aperture ring to higher f-numbers) increases the depth of focus and vice
versa.
Note that closing the aperture also decreases the amount of light reaching the camera's sensor
and therefore results in a darker image.
Basler aviator Camera Link
Adjusting Image Quality
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