The role of SLR camera AEL

Introduction: With the development of digital technology, digital technology has appeared among us. AEL is exposure lock. Simply put, when the AEL button is pressed, the camera's exposure value will only be fixed at the current metering parameters. Even if the photographer changes the shooting angle or shooting environment, the exposure parameters will not change. The role of the SLR camera AEL

One year when I was photographing cats in an alley, I saw a white Persian cat squatting at the entrance of the alley. The alley was dark and the tones were relatively low, so I used the spot metering function to meter the cat. Because the cat is white, I added 2/3EV exposure compensation at that time. After metering, press the AEL button so that the exposure parameters will not change as the shooting angle of the lens changes. After pressing the AEL button, recompose the shot, so that you can get a photo of the cat with normal exposure.

Introduction to digital cameras

A digital camera (also known as: digital camera, full English name: Digital Camera, referred to as DC) is a camera that uses electronic sensors to convert optical images into electronic data. . Digital cameras are different from ordinary cameras in that they rely on the chemical change of silver bromide to record images on film. The sensor of a digital camera is a light-sensitive charge-coupled device (CCD) or complementary metal oxide semiconductor (CMOS). Images are usually stored on a digital storage device (often using flash memory; floppy disks and CD-RWs are rarely used in digital camera equipment) before being transferred to a computer.

A digital camera is a product that integrates optics, mechanics, and electronics. It integrates components such as conversion, storage and transmission of image information, and has the characteristics of digital access mode, interactive processing with computers and real-time shooting. Light enters the camera through the lens or lens group, and is converted into digital signals through the digital camera imaging element. The digital signals are stored in the storage device through the image computing chip.