f/ 1、f/ 1.4、f/2、f/2.8、f/4、f/5.6、f/8、f/ 1、f/ 16、f/22、f/32、f/45、f/64
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What is the aperture of digital SLR camera? Apertures are like windows in a room. The larger the window, the greater the light intake, and the smaller the window, the smaller the light intake. The aperture can be adjusted to match the shutter speed to control the exposure.
Under the same shooting conditions and the same lens focal length, there are many exposure combinations, such as large aperture and high shutter speed; Small aperture and low shutter speed.
What is the meaning of DDC in digital camera? CCD, photosensitive element, is equivalent to the film of an old camera. Now it is basically replaced by CMOS.
What does CCD in digital camera mean? :detail.zol../product_param/index209。
What does the shutter of a digital camera mean? It should be the same as an optical camera, right? But I don't think it's necessary to change the shutter speed because it has an adjustable photosensitive function.
There is an aperture in the function of digital camera. From F to F, what does F mean? F (uppercase) refers to the aperture value, and f (lowercase) refers to the focal length.
The aperture values are 1, 1.4, 2, 2.8, 4, 5.6, 8,1,16, 22.
1 is the maximum aperture and 22 is the minimum aperture.
The larger the value, the smaller the aperture, and correspondingly, the smaller the amount of light entering.
Commonly used aperture values are 2.8, 4, 5.6, 8, 1 1, 16, 22.
A lens with an aperture of1.1.4,2 is quite expensive!
What is the meaning of AE in SLR digital camera? automatic exposure
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AE is called automatic exposure, which means automatic exposure. Aperture priority AE mode is an automatic exposure mode in which the photographer manually selects the aperture size when shooting, and the camera automatically selects the appropriate shutter time according to the scene brightness, CCD sensitivity and manually selected aperture, that is, the exposure mode in which the aperture is manual and the shutter time is automatic. This exposure method is mainly used for shooting occasions that need to give priority to depth of field, such as shooting landscapes, portraits or macro photography.
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AE modes can be roughly divided into four types: aperture priority AE, shutter speed priority AE, program AE and depth of field priority AE.
Aperture priority AE mode is an automatic exposure mode in which the photographer manually selects the aperture size when shooting, and then the camera automatically selects the shutter speed required for appropriate exposure according to the brightness of the scene, the sensitivity of the film or CCD, the manually preselected aperture and other information. Simply put, it is an exposure mode of "manual aperture and automatic shutter speed". The advantage of automatic exposure with aperture priority is that photographers can control the depth of field according to their own needs, so this exposure method is mainly used in shooting occasions that need to give priority to the depth of field, such as shooting landscapes, portraits or macro photography. When using aperture priority automatic exposure, the preview function of depth of field on the camera is effective, and it is also effective when adding various close-up accessories and reflective lenses, but the effect will not be ideal when shooting moving objects, TV pictures and computer pictures.
Shutter speed priority AE mode is an exposure mode in which the camera automatically selects the aperture size required for correct exposure according to metering information, CCD sensitivity and manually set shutter speed, that is, "manually adjust shutter speed and automatically set aperture". In this mode, the shutter speed manually selected and the aperture coefficient automatically set by the camera will be displayed on the LCD screen or camera.
Programmed AE exposure (P) is an automatic exposure mode, in which the camera automatically adjusts the aperture and shutter speed according to the program. This exposure mode is widely used in mobile phone cameras (that is, fool cameras).
AE mode with priority of depth of field, also called DEP, is an automatic exposure mode with priority of depth of field, which is especially suitable for taking group photos and landscape photos. This priority exposure mode is unique to Canon cameras.
What does wide-angle shooting in digital cameras mean? Generally refers to the lens. For example, our eyes see an angle of about 50 degrees, which is called the head. If they look wider, if SJCAM sports camera has a wide angle of 170 degrees, the angle will be wider. So say, you should understand?
What does CCD in scanners and digital cameras mean? Simply put, it is the photosensitive element. The CCD of the camera is rectangular and the scanner is made into a straight line. A plurality of unit CCDs are integrated on it. When in use, the received images are digitized and transmitted to the computer to form image files.
The scientific name of CCD is charge coupler, and it is enough for users to have a general understanding of its working principle.
What does the IMEI number in the mobile phone refer to? Global communication identification code, referred to as "serial number", is like a person's ID card. Every mobile phone has an independent serial number, and the same mobile phone in the world does not have the same IMEI code, which is also to prevent someone from refurbishing and counterfeiting.