What a camera can do that the eye can't, is to collect light over a long period, and then use this to form a single image. By using a long shutter speed, we can capture very faint stars that the eye can't even see.
Our eyes are practically magical, but they cannot see everything. For instance, the naked eye cannot see the moment where all four of a horse's legs are in the air or the gradual life cycle of plants -- but cameras can capture these moments.
The human eye can only see visible light, but light comes in many other "colors"—radio, infrared, ultraviolet, X-ray, and gamma-ray—that are invisible to the naked eye. On one end of the spectrum there is infrared light, which, while too red for humans to see, is all around us and even emitted from our bodies.
HUman eye dynamic range is much wider than that of a camera. This means that the camera cannot see as much contrast as our eyes can. In order to compensate for this difference, photographers must use various techniques to capture images with a wide range of contrast.
Most current digital cameras have 5-20 megapixels, which is often cited as falling far short of our own visual system. This is based on the fact that at 20/20 vision, the human eye is able to resolve the equivalent of a 52 megapixel camera (assuming a 60° angle of view).
The eyeball is just like a camera. In fact, human eyes are part of a classification known as “camera-type eyes.” And just like a camera, it can't function without the presence of light. As light hits the eyes, it's focused by the eye in a way similar to a camera lens.
One lens in particular—the 50-mm lens—is often seen as the most objective of objectifs, and it is said to be the lens that best approximates human visual perspective.
It's called lens distortion and it can render your nose, eyes, hips, head, chest, thighs and all the rest of it marginally bigger, smaller, wider or narrower than they really are.
On a clear day, you can see for up to 3 miles before the horizon due to the curvature of the earth. Yet you can see skyscrapers in a further distance than 3 miles due to no horizon obstruction. If you look into the sky you can see stars during the night that are millions of miles away.
In fact, we are only able to see visible light, which is a “tiny, tiny fraction of the electromagnetic (EM) spectrum”. He explained that humans can only see around 0.00035 per cent of reality.
By shining an infrared light directly at the camera, you can overwhelm the sensor and obscure the image. Jamming the camera's signal involves disrupting the frequency used by the camera to transmit its signal to the monitoring system.
Virtual images cannot be taken on a screen as they are not formed by the actual intersection of light rays, but they can be seen by the eyes. Ex: Image seen in a plane mirror.
Can hackers watch through your camera? If a hacker installs spyware on your phone then there is a good chance they will be able to access your camera and turn it on/off as they please. They may also be able to access any photos or videos you have previously taken.
Summary. Mirror images provide a more accurate perception of self due to the mere exposure effect, while camera images show how others see us. Selfies offer a unique perspective but can be distorted and less accurate than mirror selfies.
It is important to understand that pictures are a 2-D version of real life. This simply means that photos tend to flatten your features or distort them due to certain angles. Also, since photos store everything, any awkward movement which goes unnoticed in real life is captured for everyone to see.
We have spent our lives seeing our faces in the mirror, and we have become used to seeing our face that way round. So when we reverse that image, it doesn't look right. No one has a perfectly symmetrical face. Most people part their hair on one side rather than the other.
Our eyes are some of the most complex structures in all of nature. The human eye can take in a million simultaneous impressions and can tell the difference between eight million different colours. On a clear, moonless night it can also detect a match being struck 50 miles away.
Studies have measured the cone of visual attention and found it to be about 55 degrees wide. On a 35mm full frame camera, a 43mm lens provides an angle of view of 55 degrees, so that focal length provides exactly the same angle of view that we humans have.
However, the 35mm film frame is a “crop” of what the human eye can see because film isn't round and doesn't wrap past the corners of the box the way our eyes' photo receptors wrap around the back of the spherical eye. If you want to call 35mm, 50mm or 43mm normal — that's OK.
It seems that the best eyesight ever reported in a human was in an Aborigine man with 20/5 vision! To give you an idea of how clear and far he could see, his vision measurement compares to the natural sight of eagles. From 20 feet, he could perceive the fine details that most people can only see from 5 feet away!
Bionic eyes are implanted to replace natural eyes. They use various types of technology, depending on the specific eye or prototype. In 2012, a rudimentary version of a bionic eye was first implanted.