Today we discovered how the camera can be analogy for an eye. The human eye relies on refraction and lenses to form images. There are many similarities between the human eye and a camera.
Firstly, they both have a lens to focus the light and create an image, which is real and inverted They also have a diaphragm, controlling the amount of light that gets through the lens. This is the shutter in the camera, and the pupil, which is the center of the iris, in the human eye. Also, in a camera, film is used to record the imagine, and in the eye, the image is focused on the retina, and a system of rods and cones is the front end of the image. |
Shutter speedShutter speed is the length of time your camera's shutter is open, before you take your photo.
If it is open, light will be allowed into the lens of the camera, reflecting how light or dark your photo is. It also affects how blurred your photo will be. If you were shooting a object that was moving very quickly, a faster shutter speed (1/500) would be needed. Whereas if the photo is still, a slower shutter speed (2") is not necessary. Above is an example of my experimentation using shutter speed. |
ApertureAperture is usually an adjustable opening in an optical instrument, such as a camera or telescope, limiting the amount of light passing through a lens or onto a mirror.
It is a hole where the light travels. On a camera, it affects different aspects of your picture, and the depth of field your picture has. By giving your camera a large aperture, e.g 2.8, it means you are giving the picture more light, meaning it will be more exposed, therefore whiter. By giving your camera a large aperture, e.g 22, you're not allowing as much light into the picture, meaning it will be a lot darker, giving it a greater depth of field Above is an example of my experimentation using aperture. |