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# 090914 Vc Upp

## on Sep 23, 2009

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## 090914 Vc UppPresentation Transcript

• LIGHT
• LIGHT
Hard/Soft
• LIGHT
Hard/Soft (Contrast)
• LIGHT
Hard/Soft (Contrast)
Warm/Cool (Color)
• COLOR OF LIGHT
Measured on Kelvin scale
• COLOR OF LIGHT
Measured on Kelvin scale
Named for physicist William Kelvin, who discovered a block of solid carbon emits light at specific colors depending upon the temperature.
• COLOR OF LIGHT
Measured on Kelvin scale
Named for physicist William Kelvin, who discovered a block of solid carbon emits light at specific colors depending upon the temperature.
Temp (K) = Temp (c) + 273 (Absolute zero = 0 on Kelvin scale)
• COLOR OF LIGHT
Measured on Kelvin scale
Named for physicist William Kelvin, who discovered a block of solid carbon emits light at specific colors depending upon the temperature.
Temp (K) = Temp (c) + 273 (Absolute zero = 0 on Kelvin scale)
• COLOR OF LIGHT
We can also measure light by its wavelength
• COLOR OF LIGHT
We can also measure light by its wavelength
Visible light occupies the range on the electromagnetic spectrum from about 390 nm to 800 nm.
• COLOR OF LIGHT
We can also measure light by its wavelength
Visible light occupies the range on the electromagnetic spectrum from about 390 nm to 800 nm.
• COLOR OF LIGHT
It is helpful to understand that what we call “White Light,” is actually comprised of all colors, at varying wavelengths.
Not all colors reflect off all surfaces, and not all colors transmit through materials.
• COLOR OF LIGHT
It is helpful to understand that what we call “White Light,” is actually comprised of all colors, at varying wavelengths.
Not all colors reflect off all surfaces, and not all colors transmit through materials.
• COLOR OF LIGHT
It is helpful to understand that what we call “White Light,” is actually comprised of all colors, at varying wavelengths.
Not all colors reflect off all surfaces, and not all colors transmit through materials.
• COLOR OF LIGHT
It is helpful to understand that what we call “White Light,” is actually comprised of all colors, at varying wavelengths.
Not all colors reflect off all surfaces, and not all colors transmit through materials.
• COLOR OF LIGHT
Effect of color filtration on Color photography results in a color shift, which should be obvious.
• COLOR OF LIGHT
Effect of color filtration on Color photography results in a color shift, which should be obvious.
How does color filtration affect B&W photography?
• COLOR OF LIGHT
Effect of color filtration on Color photography results in a color shift, which should be obvious.
How does color filtration affect B&W photography?
Selective darkening of tonal values based on color of the subject.
For instance, a red or orange filter on the camera while shooting black & white, will result in a darkening of blue and green tones, such as the sky, or foliage.
• “SOFTNESS” or “HARDNESS” OF LIGHT
Relates to the edges of shadows in the scene.
• “SOFTNESS” or “HARDNESS” OF LIGHT
Relates to the edges of shadows in the scene.
Natural Light:
Direct sunlight Hard
Late afternoon/Early morning (Magic hour) Soft
Overcast day Soft
Direct sunlight bounced off a bright wall Soft, but likely directional
Direct sunlight bounced off a mirror/window Hard
• “SOFTNESS” or “HARDNESS” OF LIGHT
Relates to the edges of shadows in the scene.
Light modifiers:
Any device utilize to alter or enhance the appearance of light.
• “SOFTNESS” or “HARDNESS” OF LIGHT
Relates to the edges of shadows in the scene.
Light modifiers:
Any device utilize to alter or enhance the appearance of light.
Reflector cards/panels
Diffusion material
Plastic or fabric sheets
Umbrellas, soft boxes, grids
Gels/filtration
Etc.
• “SOFTNESS” or “HARDNESS” OF LIGHT
• “SOFTNESS” or “HARDNESS” OF LIGHT
• “SOFTNESS” or “HARDNESS” OF LIGHT
• “SOFTNESS” or “HARDNESS” OF LIGHT
• “SOFTNESS” or “HARDNESS” OF LIGHT
• “SOFTNESS” or “HARDNESS” OF LIGHT
• “SOFTNESS” or “HARDNESS” OF LIGHT