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Photojournalism. MRS. CODY & MRS. WENDELE. Camera Parts. 3 main parts of a camera lens film (or sensors) body. Camera Parts. SLR Camera. SLR stands for single-lens reflex. . Lenses. Two types of lenses convex concave An SLR uses a convex lens. Inverted Image.
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Photojournalism MRS. CODY & MRS. WENDELE
Camera Parts • 3 main parts of a camera • lens • film (or sensors) • body
SLR Camera • SLR stands for single-lens reflex.
Lenses • Two types of lenses • convex • concave • An SLR uses a convex lens
Inverted Image • When light passes through the camera lens, the image is upside-down, or inverted.
Focal Length • The farther away the lens from the object,the larger the image. • The closer the lens to the object, the smaller the image.
The Focus • How clear or blurry an image is depends on the focus.
Light • Light travels at 186,292 miles per second. • Primary source is sun ~ natural light. • A wave that travels in a straight line.
Light When light waves encounter an object, they may be reflected or refracted.
Light • Reflection: when light waves bounce off an object. • When light passes through an object, the speed of light changes and the waves are refracted.
Light 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 lens • When light passes through a prism, it breaks down into the electromagnetic spectrum. • This breakdown of light into different wavelengths produces bandsof visible light.
Light • White light is the combination of all the colors • Blackis the absence of colors or the absence of light
Picture 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 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 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.
Flash • You should be 6 to 10 feet - or 10 footsteps - away from an object for your flash to be effective. • Using a flash outside eliminates shadows in the pictures.