- Elements and Principles of Art -

• Lines: 
• A point moving in space. They can be real or implied
• Shape and Form: 
• Shapes are formed when a line meets itself.
• Shapes can be either geometric or organic.
• Squares are geometric
• Flowing curves are an example of organic shapes
• Form (unlike shape) is 3-D and has volume
• Color: 
• When you are talking about color in photography you are referring to light.
• Three Qualities of Color:
• Hue: Colors such as green, blue, etc.
• Saturation: Intensity/purity of a color.
• Value: Brightness of a color.
• Primary and Secondary Colors:
• Primary: Red, green, and blue
• Secondary: A mixture of two of the primary colors
• All of the colors on the color wheel put together make white light.
• Using colors from opposite sides of the color wheel can create contrast making your photo more interesting, and can evoke excitement.
• Value:
• The quality of light and dark in color and in light/dark.
• This is very important in photography because photography is "the medium of light".
• Value is responsible for bringing out emotion and mood in a photo.
• Space:
• Two-dimensional arrangement of objects and three-dimensional depth.
• This also refers to the depth of field of the photo.
• Texture:
• Texture is the sense of touch that can be shown in photos. If the photo is clear our brains can imagine how the objects in the photo may feel in real life. 
• Unity:
• Occurs when all of the individual parts of your photograph work together to support each other and make one strong photo.
• Unity can also make a photo boring if overdone.
• Variety:
• All of the diverse elements and principles found in the photo.
• Light/Dark, Big/Small, etc.
• Movement and Rhythm:
• Movement can be either real or implied.
• Rhythm is a different type of movement in photography and is created by the repetition of different aspects such as color, value, shape, and line.
• Emphasis:
• This is what your photo is about. It is important to make sure the viewer can understand what the main idea of the photo is when looking at it.
• To create emphasis, the photographer should give a specific object greater importance than the rest of the objects in the photo.
• Proportion:
• The relationship between the sizes of objects in an image. 
• This can help determine distance and location.