What does the so-called outsole mean in the camera? Is it the difference between SLR and card machine?

The so-called outsole in a camera, the "bottom" of the outsole comes from the size of the film negative. So outsole and outsole refer to the size of film negative, not the difference between SLR and card machine.

But in the digital age, photosensitive elements have replaced negatives, but there are also different sizes. With the diversification of specifications of photosensitive elements in recent years, such as 1 inch, 1.5 inch and other specifications. , has gradually been included in the outsole category. Outsole digital cameras use larger photosensitive elements than ordinary digital cameras.

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Working principle of photosensitive element

CCD(Charge Coupled Device), an image sensor of charge coupled device, is made of highly sensitive semiconductor material, which can convert light into charge and digital signal through analog-to-digital conversion chip.

After the digital signal is compressed, it is saved by the flash memory in the camera or the built-in hard disk card, so the data can be easily transmitted to the computer.

With the help of computer processing, the image is modified according to needs and imagination. CCD is composed of many photosensitive cells, and the signals generated by all photosensitive cells add up to form a complete picture.

Baidu Encyclopedia _ Photosensitive Component