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Milk paint is a nontoxic, milk-based paint bound with casein. It can be made from milk and lime , generally with pigments added for color. [ 1 ] [ 2 ] [ 3 ] In other recipes, borax is mixed with milk's casein protein in order to activate the casein and as a preservative.
Watercolour paint used in photographic hand-colouring consists of four ingredients: pigments (natural or synthetic), a binder (traditionally arabic gum), additives to improve plasticity (such as glycerine), and a solvent to dilute the paint (i.e. water) that evaporates when the paint dries. The paint is typically applied to prints using a soft ...
In the production of photographic prints, spotting is a type of retouching flaws in the finished print with specially made paints, dyes, pencils and pens. [1]White spots on gelatin-silver prints made from negatives are caused by dust adhering to the negative or paper during exposure.
One of the qualities for which artists value casein paint is that unlike gouache, it dries to an even consistency, making it ideal for murals. Also, it can visually resemble oil painting more than most other water-based paints, and works well as an underpainting. Casein paint loses its solubility with time and exposure and becomes water-resistant.
In colour and chromogenic black-and-white photography, a similar development process is used except that the reduction of silver simultaneously oxidizes the paraphenylene colour developing agent which then takes part in the production of dye-stuffs in the emulsion by reacting with the appropriate couplers. There are three distinct processes ...
Milk paint is a nontoxic water-based paint. It can be made from milk and lime, generally with pigments added for color. [171] In other recipes, borax is mixed with milk's casein protein in order to activate the casein and as a preservative. [172] A milk and rose-petal bath at a spa in Thailand. Milk has been used for centuries as a hair and ...
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Opalotype or opaltype is an early technique of photography. Opalotypes were printed on sheets of opaque, translucent white glass; early opalotypes were sometimes hand-tinted with colors to enhance their effect. The effect of opalotype has been compared "to watercolor or even pastel in its softer coloring and tender mood."