Oil paints use oil as a binder, linseed oil, poppy oil, and a whole lot of other oils and resins developed over centuries. Good technical training is advised for working in oils.
Acrylic paints use plastic (acrylic) as a binder and mimic, very badly, the look of oil paints.
Water color uses gum arabic as its binder, and is used mainly in transparent washes. It is regarded as a ';difficult'; medium because it cannot be retouched without destroying its freshness. If water color is made opaque by adding chinese white or gouache, it is called ';body color';. Turner used this technique a lot.
';Poster color'; includes a lot of varieties, but essentially it is water-based pigment, also bound with gum, and sold in powder form, or in bottles (Plaka) or in tubes, when they are called gouache. It is a magnificent and underrated medium used by many of the old masters, and beautiful when mixed with pastel drawing as Degas sometimes did.
There is also tempera (egg based used in the early Renaissance), and encaustic (wax based used by ancient Egyptians), and fresco (poster color painted into wet plaster, as in Michelangelo' Sistine Chapel work ).Whats the differences between acrylic paint,oil paint,water color and poster color?
They have different characturistics.
Like Rod said,..... the guy 'above' my answer, explains.
The difference is the binder, that is the medium that holds the pigment together.
Oil paints use linseed oil and dries very slowly. Used in thin layers it allows underpainting to show through.
Acrylic paints use a water soluable acrylic that dries non-soluable and very hard quickly. It also tends to be quite opaque even in thin layers.
Water color uses gum arabic and remains soluable to some degree after drying. Usually painted on very thin layers with the board or paper becoming part of the image.
Poster color uses a cheap medium and is for commercial application, not fine art.
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