History of digital photography – the beginning

History of digital photography – the beginning:

You may be surprised to learn that the origins of digital photography lie as far back as the 1950s. Yes, it’s the time of the baby boomers, the cold war and the space race!

These are events that do actually have significance in the history of digital photography. I’ll come to those later, but the first significant development in comes from another boom of the era – television!

In 1952 the first video tape recorders were used to record TV programs. Before this, most television was either live, or was a broadcast movie.

With video tape an image was recorded, not as an image in itself, but as a coded signal on tape. Later the coded tape was run through a decoding machine (i.e. a video tape player) and the machine converted the coded signal back into pictures.

This is an important step in the history of digital photography. Video differed from the films that had gone before because film records an actual image, frame by frame.

Pull out an old cinema reel and you’ll see the frames. Pull out cassette tape and you’ll see nothing! It needs to be decoded for you first.

The effect is the same as comparing film vs digital photography. Look at a developed film (the negative or slide) and you will see an image.

Pull a memory card out of a digital camera and there’s nothing to see. The image held on the card needs to be decoded first.

ARDA DINATA
http://fotografinews.blogspot.com/

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