principles of light n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Principles of Light PowerPoint Presentation
Download Presentation
Principles of Light

Loading in 2 Seconds...

play fullscreen
1 / 28

Principles of Light - PowerPoint PPT Presentation


  • 85 Views
  • Uploaded on

Principles of Light. The Science Behind Photography. 1. White light is made up of equal amounts of red , blue and green light. additive process. subtractive process. 1. White light is made up of equal amounts of red , blue and green light. Red, Blue and Green Cannot be made

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Principles of Light' - aine


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
principles of light

Principles of Light

The Science Behind Photography

1 white light is made up of equal amounts of red blue and green light2

Red, Blue and Green

  • Cannot be made
  • Exist in Nature
  • PRIMARY COLORS

RED

WHITE

BLUE

GREEN

1. White light is made up of equal amounts of red, blue and green light.
1 white light is made up of equal amounts of red blue and green light3

RED

MAGENTA

YELLOW

WHITE

BLUE

GREEN

1. White light is made up of equal amounts of red, blue and green light.

CYAN

1 white light is made up of equal amounts of red blue and green light4

RED

  • Cyan, Magenta, Yellow
  • Combine EQUAL amounts of 2 PRIMARY colors
  • SECONDARY COLORS

MAGENTA

YELLOW

WHITE

BLUE

GREEN

1. White light is made up of equal amounts of red, blue and green light.

CYAN

1 white light is made up of equal amounts of red blue and green light5

Wavelengths of color are viewed on the spectrum.

  • Visible Spectrum = Rainbow

Water acts like a PRISM to REFRACT or BREAK APART white light into all colors

1. White light is made up of equal amounts of red, blue and green light.
1 white light is made up of equal amounts of red blue and green light7

VISIBLE

SPECTRUM

+

INVISIBLE

SPECTRUM

=

TOTAL

SPECTRUM

1. White light is made up of equal amounts of red, blue and green light.
2 objects get their color from reflected light

All colored objects reflect light to some degree.

  • White objects reflect all the light that hits them.
  • Can only take a photograph when there is a light source.
  • No light = No color
2. Objects get their color from reflected light.
3 black objects absorb all light

Black is not a color

  • It is the absence of color
  • Black objects absorb ALL the light that hits them
  • Inside if cameras, darkroom, developing tanks are black
  • WHY?
3. Black objects absorb all light.
3 black objects absorb all light1

Can a camera see black?

Can black be photographed?

Will the film be exposed?

3. Black objects absorb all light.
3 black objects absorb all light2

Camera cannot see black?

Black cannotbe photographed?

The film will not be exposed?

3. Black objects absorb all light.
4 silver when struck by light turns black1

Film/photo paper has two main layers:

    • Emulsion
    • Base
  • Emulsion – silver particles suspended in a gel
  • Base – support for the emulsion; paper or plastic
4. Silver, when struck by light, turns black.
4 silver when struck by light turns black2

Emulsion – silver particles suspended in a gel

  • Base – support for the emulsion; paper or plastic

EMULSION

Curls towards

the emulsion

BASE

4. Silver, when struck by light, turns black.
4 silver when struck by light turns black3

EMULSION

Curls towards

the emulsion

PAPER = SHINY

FILM = LIGHTER

BASE

4. Silver, when struck by light, turns black.
5 light travels in a straight path5

Pupils dilated by eye doctor?

Squint eyes to see better?

  • Larger lens opening, more light, blurry image
  • Smaller lens opening, less light, sharper image
5. Light travels in a straight path.