Section+2,+Table+6+-+digital+media


 * Powerpoint 10/1/12**
 * **1981 – Sony created first consumer digital camera – Sony Mavica**
 * **Digital imaging uses an electronic image sensor to record image vs. chemicals on film**
 * **Two types of sensors**
 * **CCD: charge coupled device**
 * **CMOS sensors: complementary metal-oxide semiconductor-type of digital circuitry**
 * **pixel- single element, point, dot, that contains color**
 * **depending on camera capability, you can capture images with millions of pixels**
 * **monitor resolution- number of dots drawn horizontally across the screen, and vertically across the screen**
 * **Bit depth- number of bits of information each pixel**
 * **GIF- graphics interchange format**
 * **-can animate in short loops**
 * **-replaced by PNG**
 * **PNG- portable networks graphic**
 * **-lossless compression**
 * **-flexible color-wise than GIF's**
 * **small graphics= use PNG**
 * **animated graphics= use GIF**
 * **Digital Photography Terminology**
 * **Focal length**
 * **Aperture**
 * **ISO**
 * **Shutter speed**
 * **sRGB**
 * **EXIF data/GPS**
 * **RAW (.CR2/.NEF)**

Powerpoint 10/2/12
 * **Composition: arrangement of elements and their relationship to the background of the image**
 * **Find the focal point**
 * **Pick one focal point and isolate the subject. Be sure that only things you want the view to see appear in the picture!**
 * **Simplify your Background**
 * **Try changing your point of view by walking around the focal point to get rid of distracting background**
 * **Avoid Unrelated Subjects**
 * **Make the reason for taking this picture clear**
 * **Avoid Centering Subjects**
 * **Generally, pictures with subjects directly in the center tend to be more static and less interesting than pictures with off center subject placement**
 * **Rule of Thirds**
 * **The human eye is naturally drawn to a point about 2/3 up a page**
 * **Imagine our picture area dived into thirds both horizontally and vertically**
 * **the intersections of these imaginary lines suggest four options for placing the center of interest for good composition**
 * **See slides 9-14 for examples**

** The Megapixel Myth (Article) **
 * Pixels- Stands for Picture Element. Made up of little dots arranged horizontally and vertically to form a picture.
 * Image Resolution- Resolutions is how many pixels you have counted horizontally or vertically when used to describe a stored image. Usually fewer pixels vertically since the images aren’t as tall as they are wide.
 * Print resolution-How many pixels you have per inch or other linear unit when you print on paper.
 * Screen resolution-Most computer screens today are about 100 DPI, dots per inch. Most computer screens are about 1,024 x 768 pixels. If your screen is 10" wide then divides 1,024 by 10 and you have a 102.4 DPI screen. Bigger screens tend to have more pixels, for instance, my 22" CRT has 1,600 x 1,200 pixels and has a viewing area of 16 x 12."


 * How Cameras Work **

__-This light path depends on two major factors:__ 1) the angle of the light beam's entry into the lens.

2) The structure of the lens

-The magnification power of a lens is described by its focal length

-focal length is the distance between the lens and the real image of an object in the distance.

-**telephoto lens** is a lens with an especially long focal length

- For close ups use **wide-angle lens **


 * -shutter ****determines how much light gets into the lense of the camera **

-__two major factors of exposure level:__ 1) How much light is passing through the lens

2) How long the film is exposed

- To increase or decrease the amount of light passing through the lens you must adjust **aperture** ​ (is a hole or an opening through which light travels). .

-**shutter speed** determines length of exposure.