Sophie Gray Gaillard

"Colorful Tornado"

This photo is an example of long exposure photography. The camera was set to a very low shutter speed and put on a tripod so it stayed completely still. The camera had to be put on a tripod or stable surface because otherwise the picture would turn out very blurry. If the camera even moved slightly, one would see the evidence in the photo. The very low shutter speed allowed for the camera to let in more light. It was completely dark in the room, meaning it was at a low light level. Being at a low light level means that there are less photons per unit time.

While the camera was taking the picture, the Christmas lights were thrown through the area of my shot, this is how they formed the unique shape in the picture. The camera captured the light of the Christmas lights and formed the picture. The camera's electronic sensor is made up from many tiny pixels that are hit with incoming photons of light when the shutter is open and this is how it records the image. While taking this picture, the ISO, which measures the camera’s sensitivity to light, had to be very high, increasing its sensitivity to light. Since the camera sensor is so sensitive, a lot of background noise can be recorded, mostly caused by free electrons from the image sensor that pollute the photoelectrons from the inbound light. This process created a very interesting picture that turned out to look like a colorful tornado.

Comments

Cool shot

Great shot and idea, very cool.

We use a similar technique sometimes in wedding reception shots to create a sense of motion in the images but isntead of sitting the camera still and moving the light through it, I drag the shutter and move the camera while it's exposing, creating a streak of light.

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