What are the advantages and disadvantages of digital and film cameras respectively?

1. Advantages of traditional cameras. Traditional cameras image well because each imaging element can only produce an exact electrical (or magnetic) signal, so it is most leery of interfering light. Each light-receiving element reflects incident light from different directions and intensities in varying directions and degrees. Therefore, each element will naturally receive these reflected light, when the reflected light is strong enough, it will greatly affect the direct light from the scene of the judgment and analysis, the end result is likely to be the formation of this element of the signal is not from the original scene, but from the scene of the light and the mixture of reflected light, or more seriously, it may be the signal of the reflected light. From the above we can know two points, the first into the phase element to minimize the reflection, which is particularly important for the edge of the element. The second is because the components of the plane of the single-layer arrangement, and each component can only produce a signal, and therefore the formation of the image of the lack of three-dimensional sense of reason, because any entity in the real world is in the form of three-dimensional three-dimensional form of existence, but also to the human vision to form a sense of texture of the object with a particular texture, and the CCD's such a single layer of the rules of the arrangement of the open into the digital signal is simply impossible to have this texture and texture. This kind of texture and texture is not possible with CCD's single-layer regular arrangement of digital signals. \x0d\ Silver salt photographic material after more than a hundred years of development, although the light-sensitive particles have been very fine, but it is far from a particle as small as a molecule level, so each particle of the different surfaces of the light will be thrown thanks to it on the upper side of the corresponding chemical reaction, that is to say, in a light-sensitive particles, due to different surfaces of different light, and thus ultimately on different surfaces to form different colors. This is in contrast to the fact that each element of a CCD can only produce one color. This is the most essential difference with the CCD each element can only produce a signal, coupled with light-sensitive particles in the coating is not a single layer, but a certain degree of stacking, so the upper layer of particles under the gap of the bottom particles of the light and the top layer is certainly not the same, on the one hand, the intensity of the light is weak, on the other hand, it is likely to be affected by the reflection of the light, which will form a rich layer, giving people the most direct feelings It is the sense of three-dimensionality. \x0d\ The last thing to say is that the silver salt photographic material of the photoreceptor and the imaging body are one and the same, there is no change in space. A real image is obtained through a chemical reaction, and this image is a real material entity. Digital cameras, on the other hand, strictly speaking, have only the light-receiving process, not the imaging process, because there is no material entity of a real image in a digital camera; all it has is a digital signal similar to an image in the human brain. \x0d\ 2. Advantages of digital cameras. The photographic sensor of a digital SLR is not comparable to that of a high-grade film, and the advantages of a digital SLR are ease of use and low cost. Digital SLR photos can be viewed immediately, if the shot is not good enough to re-shoot, film cameras can not do; digital camera storage is convenient, occupies little space, a memory card can store thousands of pictures, not satisfied with the direct deletion of the space does not take up space; digital camera storage costs are low, burned to DVD, then the cost of storage of a photo is only a few pennies, and film cameras are a film is a small amount of expenditure. The film of a film camera is a big expense. Film camera post-processing process is complex, high technology, investment funds, difficult to master, ordinary enthusiasts do not have the energy and funds to set up their own darkroom, can not be adjusted and processed in the late stage, in addition to the photo of the development is also a big expense, while the digital camera out of the photo as long as there is a computer with the software can be dealt with, the process is simple and easy to learn, you do not want to wash the photo can be stored directly in the computer, saving a lot of money. Saving a lot of money. \x0d\ Furthermore, if you want to share the photos with your friends, if a group of people go on a trip, how many photos will have to be developed and then sent one by one by different means such as by mail, and how much will that cost? But digital information storage is different, with email you can Email, and it is in a very quick time for the other person to receive, and if not, you can then wash them into photos and send them. \x0d\ Compared to today's digital cameras, the initial introduction of digital camera products, the quality of the images obtained by today's standards can only be considered a prototype, which left more of an impression of the convenience and compactness of digital cameras. With the rapid progress of information technology, digital camera technology has become increasingly mature in recent years, digital pixels from hundreds of thousands, millions to tens of millions of lenses from the standard, wide-angle to zoom, viewfinder from the side axis type, single lens reflex to color LCD screen real-time display, digital cameras have begun to reveal its true practical value.