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Wide Angle Lens

The polyoptic wheel's second setting allows you to take wide-angle images with a horizontal field of view (FOV) of 80°. In this setting, a wide angle lens on the wheel works with the primary lens on the PCB. The captured image is bulgy-looking and is said to have "barrel" distortion. When it is downloaded from the camera, the image is converted by Bigshot's software into a distortion-free panoramic photo.

Figure 4 compares the FOV captured by the wide-angle lens together with the primary lens (shown in red), to that captured by the primary lens alone (shown in blue). Although the wide-angle lens has a fixed shape, you can use the slider to see how a designer might alter the shape of the lens to vary the field of view.

Scene Wide Angle Lens Primary Lens Captured Image Field of View (50º) 40º 50º

Figure 4: Image formation with a wide-angle lens

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