Essay On Camera Eye

Part A.

Our eyes are an incredible and incredibly complex organ. We are able to look at and around our surrounding environments and dynamically adjust as needed. The camera can be used as an analogy to the eye and visual system, though it should be noted that there are limitations such as, cameras only capture a single still image (from that perspective, perhaps what we see is more akin to that of a video camera). The table below explains how individual components of the eye can be compared to individual components of the camera and their roles in each system.

Function Camera Eye

Similar Opening for light to enter Aperture Pupil

Similar Control amount of light entering Diaphragm Control of aperture Control of the size of pupil via the iris

It innervates layers 1 and 2 of the dLGN mainly by rods (rod dominated) and seems to signal in fast and transient bursts (Nieuwenhuis, Jepma, Fors, & Olivers, 2008).

The Parvocellular Pathway is associated with spatial integration and temporal segregation (texture and depth perception). It consists of P-cells, retinal ganglion cells with small cell bodies. It innervates layers 3, 4, 5 and 6 of the dLGN and is known to signal in a slow sustainable manner (Nieuwenhuis, Jepma, Fors, & Olivers, 2008). Being cone dominated means that it also has an association to color perception.

Part B.

From a simplistic perspective, both cameras and eyes have lenses. The digital camera’s lens sends light rays to the CCD chip. A human eye’s lens sends light rays to the retina. The CCD chip is like the retina of an eye as they both change the light rays into the images which we

But they can still see much better than the average digital camera. This is in part due to the photoreceptors (rods and cone cells) found in the eye. Rod cells are responsible for our night vision, and ability to see in dim light. They are mostly located in the peripheral regions of the retina, so one may find that they can see better at night if they focus their gaze off to the side of whatever they are looking at. Cone cells on the other hand are concentrated in a central region of the retina called the fovea. They are responsible for high visual acuity tasks such as reading, as well as for color vision. We can further categorize cone cells into: red, green and blue. Depending on how they respond to red, green, and blue light, enables us and determines how we perceive