Pastels: is an art medium in the form of a stick, consisting of powdered pigment and a binder
crayons: is a stick of pigmented wax used for writing or drawing. wax crayons differ from pastels, in which the pigment is mixed with a dry binder such as gum arabic, and from oil pastels, where the binder is a mixture of wax and oil.
ink: ink can be a complex medium, composed of solvents, pigments, dyes, resins, lubricants, solubilizers, surfactants, particulate matter, fluorescents, and other materials
charcoal: charcoal is a form of dry art medium made of finely ground organic materials that are held together by a gum or wax binder or produced without the use of binders by eliminating the oxygen inside the material during the production process.
graphite: graphite is a metallic grey writing and drawing material most commonly used in pencil form – though graphite powder is also used by artists as a drawing material.
tempera: term that stands for paint mixed with cohesive materials, such as egg yolk, and describes the painting style and the art medium. fast-drying and a long-lasting
oil painting: oil colours, a medium consisting of pigments suspended in drying oils. ... the outstanding facility with which fusion of tones or colour is achieved makes it unique among fluid painting mediums; at the same time, satisfactory linear treatment and crisp effects are easily obtained.
acrylic paint: acrylic paints you must be decisive with your strokes, as the paint quickly dries once applied.
watercolors: watercolor you can build up layers of colors while painting, but you work in a different order than you do with acrylic paint. watercolor is translucent
chalk: artist can use a variety of techniques to create art with chalk. they can apply it to dry paper, for example, but also smudge and blend it to create various effects.
First off, this isn't really a yes or no question, this is an opinion.
My opinion is that photos that have been altered in any way should be marked. These days you never know what a person will do to say, get a job, advance a political agenda, or ruin the reputation of another person. The public has the right to the truth. Therefore, altered pictures should be marked or labeled in a way that differentiates them from others.
