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.
This page provides all possible meanings and translations of the word trifocal lenses. Trifocal lenses. Trifocals, patented in 1827 by John Isaac Hawkins, are eyeglasses where the lenses have 3 regions to correct for distance, intermediate, and near vision. Trifocals are mostly used by people with advanced presbyopia who have been prescribed 2 diopters or more of reading addition.