0-360 Panoramic Optic Setup for HP Photosmart 945
Content Inside: A note about Aperture, Depth of Field, and Field of View Aperture a mechanism behind the camera lens similar to the iris of your eye, opening and closing to adjust the amount of light entering the camera. The aperture opening also determines the Depth of Field of the image. Depth of Fielddescribes the objects in the image which are in focus, in terms of their distance from the camera. For example, a camera focused at 30m, with a Depth of Field of 8m, will have objects from 26-34m from the camera in focus. Objects closer than 26m or further than 34m will start to become blurry. Field of Viewthe vertical Field of View (vFOV) of the 0-360 attachment. The 0-360 has a vFOV of 100+ degrees, meaning it will see from 50+ above the horizon to 50+ below the horizon. A smaller Aperture opening (higher F-Stop number) allows less light to enter the camera, but yields a higher Depth of Field. With a high F-Stop, the shutter speed needs to be slowed down to allow more light (else a dark photo), but will have more Depth of Field in focus. A larger Aperture opening (lower F-Stop number) allows more light to enter the camera, but a lower Depth of Field. This means the shutter speed can be faster, but fewer objects will be in focus. (With slower shutter speeds, moving objects may blur.) The 0-360 is designed to operate with a camera F-Stop of F8.0 or higher (preferably 9 or 10). This provides a high enough Depth of Field to allow the entire mirror to be in focus. With lower F-stops, the shutter speed can be increased, but the upper or lower portions (or both) of the mirror may not be entirely in focus. This means the image far above or far below the horizon may not be sharply focused. This may not be a problem, as many times the sky or the ground may not need to be sharply focused. With the HP Photosmart 945, you should be able to get a vFOV of approximately ...
Source: www.0-360.com
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