What are the similarities between digital cameras and traditional film cameras?

in traditional film cameras, the scene is exposed to the film by pressing the shutter, developed into a negative image, and then made into a positive image on photographic paper.

traditional film cameras have many different specifications, both for cameras and films. There are 135 cameras, and a roll of film can take 36 pictures of 24 mm x

36 mm (there are also 24 pictures); There are 12 cameras, and a roll of film can take 1 pictures of 6mm x

7mm. In addition to 135,12 cameras, professional photo studios also have cameras and films that can shoot loose pages. There are 4-inch, 6-inch, 8-inch, 12-inch specifications, and large-scale professional photo galleries also have long-strip transfer and film rolling (camera is 1 inches, film is 1 inches wide, and the horizontal degree is 3 inches, 4 inches to 15 inches). When shooting, the characters are arranged in a circular arc, and the camera is equal to the horizontal longitude of the characters in the middle. The camera starts to rotate from the left end, and the film moves synchronously for exposure.

the film has different speed sensitivities, such as 1 degrees, with slow photosensitive speed and fine image particles, and 2 degrees, 4 degrees to 16 degrees, with fast photosensitive speed and coarse image particles. People usually use 1 degrees and 2 degrees more.

There are SLR cameras and "fool" cameras, and their shapes are similar to those of 135 cameras.

There is a viewing screen on the back of the digital camera, and all kinds of scenes in the field of view of the lens can be displayed and watched on the screen. After pulling the shutter, the scene is still on the screen and transferred to the memory card (chip). People can look back at the pictures taken one by one on the screen, and those that are not satisfied can be deleted. You can also plug the camera cable into a computer or TV set and watch it on the screen.

the clarity of photos taken by digital cameras depends on the number of images. For example, 2 million and 3 million images can be put into 8-inch and 1-inch photos, and 6 million pixels can be put larger and the image is clear.

Digital cameras are the same as film cameras in lighting, composition and framing.

for more information about photographic equipment and techniques, you can go to the novice exchange area of Longshe Tianxia Photography Group-Photography Forum.