No ULs have been set for potassium from dietary sources. For infants 0-12 months, the source of intake should be breast milk, formula and food only. For children, adolescents and adults, including pregnant and lactating women, supplements should be taken only under medical supervision.
Autofocus is a mechanism in an optical system which automatic ally changes the optics to focus an image. In a camera, this is used to focus the subject image, through the lens, onto the focal plane-the film or digital sensor. Autofocus MethodsEdit ... Autofocus Evolution.
Near and far, with-line. Bifocal lenses are like the vinyl records of the optic industry. Usually favored by a more mature audience, they have the added benefit of not requiring any adjustment period. This lens includes both near and far distances, and includes a segment line that separates the two.