Canon A650

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Canon A650 absorption capturing energy when light strikes a surface and the energy enters the material
that does not pass through.
Canon A650 of the opening in a lens that allows the light through—larger apertures allow
more light to reach the sensor. The aperture is commonly described by the ratio of the fnumber.
Canon A650 lenses compound lenses with higher curvature elements that reduce
chromatic aberration. They often have special coatings to further reduce chromatic
aberrations.
Canon A650 automatic focusing lenses use a linear pattern in the
sensor to determine focus by movement of lens elements to a point at which the fewest
number of sites capture the light.
chromatic aberrations Caused by lights of different wavelengths focusing at different points.
Aberrations can be reduced by the use of multicoatings and compound lens elements of Canon A650.