Digital Photography

When was it first discovered and by whom?

By Kodak in the 1980's

The first true digital camera that recorded images as a computerized file was likely the Fuji DS-1P of 1988, which recorded to a 16 MB internal memory card that used a battery to keep the data in memory

The first commercially available digital camera was the 1990 Dycam Model 1; it also sold as the Logitech Fotoman. It used a CCD image sensor, stored pictures digitally, and connected directly to a computer for download.

What is special about the technique?

You could copy photos and also print it out.

You didnt have to use the liquid and dark room process so it was much easier.

To process a photo it could take at least 10 seconds where as other methods could take at least a number of days.

Many compact digital still cameras can record sound and moving video as well as still photographs. Most 21st century cameras are digital

How does this technique work? Can you find or describe the processes needed to make it work? Maybe illustrate how it is made. (Wikipedia)

The first method is often called single-shot, in reference to the number of times the camera's sensor is exposed to the light passing through the camera lens. Single-shot capture systems use either one CCD with a Bayer filter mosaic, or three separate image sensors (one each for the primary additive colors red, green, and blue) which are exposed to the same image via a beam splitter.

The second method is referred to as multi-shot because the sensor is exposed to the image in a sequence of three or more openings of the lens aperture. There are several methods of application of the multi-shot technique. The most common originally was to use a single image sensor with three filters (once again red, green and blue) passed in front of the sensor in sequence to obtain the additive color information. Another multiple shot method is called Microscanning. This technique utilizes a single CCD with a Bayer filter but actually moved the physical location of the sensor chip on the focus plane of the lens to "stitch" together a higher resolution image than the CCD would allow otherwise. A third version combined the two methods without a Bayer filter on the chip.

The third method is called scanning because the sensor moves across the focal plane much like the sensor of a desktop scanner. Their linear or tri-linear sensors utilize only a single line of photosensors, or three lines for the three colors. In some cases, scanning is accomplished by moving the sensor e.g. when using Color co-site sampling or rotate the whole camera; a digital rotating line camera offers images of very high total resolution.

Can you comment how important this technique has been for the history of photography. For example was it popular and is it still used today?
Digital photography is popular nowadays as it's more modern and very easy to process photos..

Modern photographers find it very handy that technology nowadays have improved dramatically.

You can back up your photos within seconds using memory cards and transfer them onto your computer.

Can you find Image evidence of the technique?