I keep going on my turtle speed through the lighting book.
Last enlightened day, I have studied the characteristics of light: brightness, contrast and color.
Today I just read two pages that introduce the concept of lighting: the interaction between the light and the subject as also how the subject affects the photons that hit him.
A subject can:
- Transmit a photon
- Absorb a photon
- Reflect a photon
Transmission
Why can't I photograph air? Because air transmits the photons right away, in parallel
, not causing any change of direction or speed on the photon. And this is why we can see through air! If we have mist, it changes the direction and speed of the photons and so, we notice it! FANTASTIC!
This is why I always say we can't see ghosts with our human eyes: ghosts can't interact with photons and can't be seen! The light is transmitted trough them. But ghosts can for sure be seen into your own mind....
Back to lighting:
As soon as you introduce something into the transmitting environment that can change the photon direction and/or speed, you introduce refraction: you bend the rays of light and cause them to change speed. And thanks to that, you can see it an photograph it!
Fantastic!
To illustrate this A-HA moment of pure enlightment, I did an exercise with water and oil. Because water transmits a lot (it means it doesn't change much the direction and speed of the rays of light) you can hardly see it (or photograph it) and to cause some refraction I have added some oil drops to it. So, when the ray of light hits the oil bubbles, its speed gets changed and we can see it. Fantastic!
The colors on the images are another experience with gels on flashes. And because I did not have any place to buy the colored foils, I bought colorful party flags and attached them to the flash gun with a rubber band.
Cool!
COOL!
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