Light through glassLight through glass When a glass allows enough light through it to see an object clearly, the glass is transparent. When light can barely pass through a glass, the glass is translucent. When light cannot pass through a glass, the glass is opaque.
Light through lensLight through lens When light passes through a prism, it breaks down into the electromagnetic spectrum. This breakdown of light into different wavelengths produces bands of visible light.
Light White light is the combination of all the colors Black is the absence of colors or the absence of light
Picture formationPicture formation Cameras can use the media of film, which requires a chemical process to form a picture. Or the camera uses an electrical current to form a digital picture.
Sensors Digital pictures are formed by electrical semiconductors also known as sensors
Film NegativeFilm Negative A negative is where lighter areas appear darker and darker areas appear lighter – which is then converted into a positive image in printing.
Colors The 3 colors which combine to produce all colors: Red Blue Yellow
Grains The pictures produced on film are made of grains, which are circles of color
Pixels Digital pictures are made of pixels, which are made of squares. The amount of colors in the squares is called saturation. If a digital picture is blurry/out-of-focus, it is called pixilation.
Iris The hole that lets light into a camera is called an iris.
Shutter The curtain that goes up and down in a camera is called the shutter. Controls the focus and the light/exposure.
Aperture The part that controls the size of the hole in the camera is the aperture. It is like the iris of the eye.
Focus To lock the focus, press the shutter button half way down.
Pentaprism A camera uses a kind of prism called a pentaprism.
Rule of ThirdsRule of Thirds The main principal that controls where a subject is found in the frame is called the rule of thirds. This principal states that you divide your picture into nine equal parts. There are two vertical lines and two horizontal lines. The intersection of these lines are called the vertices.