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Photography is the art of reproducing pictures of people, objects or places in their exact likeness. These images can be transferred on any photosensitive material. Photography includes taking and printing pictures.

The backbone of photography is the camera, the instrument or device that works on the principle of optics. The camera and photographic techniques have undergone phenomenal changes since the time the first camera was made. The earlier model did not contain the film; instead, it had a small light-shield box with lens and translucent screen on either side. The image that traveled through the lens was stored on the screen. Known as 'camera obscura,' it was no more than a sketching device for artists.

Then the scientists discovered the quality of silver nitrate that changes its color when exposed to light. This was the beginning of photogram, a method of making permanent images.

They would place objects on the paper dipped in silver nitrate and expose it to the sunlight. After sometime the area covered under the object stayed white while the rest of the space turned black. However, the image formed was temporary, so the method did not last long.

Over the centuries, the principles, the method and the material used in photography went through many changes. After experimenting with various methods like Daguerre and calotype process, finally collodion, or the wet plate technique was universally accepted.

Modern photography has given a totally new meaning to the entire perception of life and privacy. Photography has made it possible to capture and preserve special moments, in private and in public life. History became more authentic with pictures, and photographs served as evidence in many cases. People made their family tree in their albums. Suddenly life was so much more fun and meaningful.

With the tremendous technological advances in the art of photography, it is no more just fun and frolic but has acquired the dimensions of a full-fledged profession. Photography has many branches and types, such as:

- Aerial photography is the art of taking photographs from the air.

- Art photography is devoted to beautiful pictures for the sake of beauty only.

- Studio or advertising photography is dedicated to promotion of products and institutions.

- Photojournalism takes pictures of events to support the news story and to create awareness among the people.

- Outdoor and travel photography is focused on taking pictures of landscapes and natural places.

- Sports photography records images of the sporting events and games that take place in the world.

- Some types of photography like the macro and scientific and macro or close up photography are restricted to specific fields and are not widely known.

The charm of photography lies as much in the end product as in the process of taking pictures. Looking at an album is like taking a trip down memory lane; it makes us feel highly nostalgic and emotional.