Light

This picture of Deckard’s apartment taken from the film Blade Runner is a good example of Dynamic Occlusion.

Light is shining on all the surfaces in the image, however, the intricate tiles and wall panels are stopping the light, creating lots of shadows in the tile ridges. The wall panels are most noticeable, but dynamic occlusion is also happening above and below the cupboard, as well as under the counter lip.

The scene is very detailed with very little flat surfaces, almost every surface is broken with a ridge or patterned tile, and this is what is creating the amount of occlusion.

As the picture is from a film set there is probably more light sources than what is visible in the scene, the scene shows 5 possible light sources.

Despite the number of light sources, there is still a lot of dynamic occlusion. The scene is not saturated in light; it is probable that it would be if the tiles were flat and shiny, like most kitchens are.

This picture of a Bat shows sub surface scattering. As the light shines through the Bats wing membrane, the light is refracted off the different textures and thicknesses within the membrane, it is then refracted out into the camera lens.

This process enables the camera to see the veins and small bones within the membrane.

The bats bones are denser than the membrane and they absorb the light, this is why it appears as black in the photo.

The light is even passing through the blood of the membrane giving the wing a reddish brown tone. If the light were not passing through the membrane, it would appear black.

This picture of a bubble being burst is a good example of reflection, refraction and also demonstrates how the human eye works.

The reflection can be seen in the centre of the bubble, the photographer that took the photo is visible in the bubble. The light is being reflected off the shiny flat surface of the bubble. As the bubble is spherical, the photographer appears stretched out at the sides, like a fish eye lens on a lot of skateboarding photography.

For this reflection to happen, the light came from the sun, onto the photographer, then bounced onto the bubble, and then finally into the camera lens.

The refraction can be seen on the outer edge of the bubble, as the bubble is round; the light that travelled to it is being spread out equally away from the bubble, appearing to stretch the image of the building.

On the top of the bubble, there is also swirling patterns of blues, purples, oranges and greens, this is the refraction of light of different wave lengths. The detergent that makes up the bubble refracts different densities, creating the rainbow colours on the bubble.

The human eye sees images upside-down and the brain interprets the image the right way up, this is because the eye lens flips the light entering the eye. The bubble is also acting like a lens as the image of the woman who popped the bubble is seen up side down on the other side of it.

This tunnel picture is a good example of bounce light.

The light is travelling from the sky outside the tunnel, it then is reflecting and refracting off the floor and up onto the ceiling of the tunnel. The ceiling is made up of flat bricks, which also reflect the light further into the tunnel.

You can make out the shape of the bricks, this shows that the cement that holds the bricks together is not reflecting the light but absorbing it.

The light is also being reflected off the sidewalls of the tunnel, which shows that the light is being refracted off the floor in lots of different directions.

The light only travels as far as the camera, as the far sides of the tunnel are black, which means no light has reached there. This is because no light is being reflected back into the camera lens from that position.