Covering Power

covering power [′kəv·riŋ ‚pau̇·ər]

(engineering)

The degree to which a coating obscures the underlying material.

(metallurgy)

The ability of an electroplating bath to produce a coating at a low current density.

(optics)

The field of view over which a camera lens can produce a sharp image, frequently expressed as an angle.

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hiding power, covering power

The ability of a paint film to obscure completely any pattern, marks, or color on the surface to which it is applied.

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Covering Power 

(also hiding power), the ability of pigmented paints and varnishes to cover a colored surface. The covering power is proportional to the difference in the refractive indexes of the pigments and the film-forming vehicles; it is also dependent upon pigment properties. The greater the covering power, the less paint used per unit of surface. The covering power is determined by visual and photometric methods.

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Covering Power 

in photography, the measure of the effectiveness of silver in darkening, equal to the ratio between the diffuse optical density of the darkening D_≠ and the surface concentration of the silver present CAB (in g per sq m). The smaller the silver granules producing the darkening effect, the greater is the covering power (usually from 0.25 to 0.8 sq m per g).