Photography allows anyone to take pictures to tell stories through just one, or a series of images.- It is evolving quickly as it is a relatively recently discovered medium and so has much more potential yet to be discovered.
- It fits in well with communication design as it allows for advertising, newspapers, the internet, etc.
- The book explores themes that have driven photographers and looks at the past, present and future of photography as well as aiming to inspire exploration of photography.
- The word photograph literally means 'clear images created by light'.
- Photography involves chemistry, physics, optics, computers, electronics, commerce and creativity and photographers can use any process since the beginning of photography to create their pictures.
- Digital photography involves combining digitalised images with a computer. They do not have to be taken on a digital camera as any photograph can be scanned into a computer. These images can be edited and manipulated on a computer which is a key part of digital photography.
- Ingledew states the camera is 'omnipresent' during our lives as it captures our rites of passage such as birthdays, graduation and travel experiences. They provide links to memories; when we see a photograph, we instantly connect a memory to it.
- Photographs allow people to see things from the past, times before they were even born, which without the medium, would be impossible. They also allow people to see things which they could not with the naked eye, for example, a close up of a bug from an electron microscope or a close up of a planet, too far away from Earth to even be able to see it existed with the naked eye.
- Photography is a universal language, there are no translation barriers but every person can interpret an image differently.
Film-Based Photography
- Black and white photography works by coating paper in silver, which darkens when exposed to light.
- Colour photography also uses the silver and light reaction as well as using RGB to create any colour in the rainbow. There are 3 layers of silver, each picking up one of the RGB colours. Each layer darkens according to the colour that has fallen on its surface and then absorbs a dye in proportion to the amount of light it was exposed to. Bleach removes the silver and a coloured photograph remains.
Digital Photography
- Digital images are made up of pixels which form an image when our eyes merge them. On a digital camera, the image is divided into these pixels, with each one being a block of one of the millions of colours the sensor can detect. These are recorded as numbers/digits and can be changed once the image is digitalised.
Both are eyes and cameras are similar, with both having lenses to focus the light reflected from objects but unlike the ovoid image we see, cameras produce a circular image from which a square or rectangle is selected. The human eyelid works as a shutter and the pupil controls the aperture. The retina works as the film/sensor. Our eyes see a 3D image due to the two images produced, one from each eye, which creates binocular vision, whereas a camera can only pick up a 2D image. However, the focus range of a camera is much better than the human eye as we cannot focus on anything closer than around 20cm but the camera has no limit.
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