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Interpretation:

A digital SLR camera is a single-lens reflex digital camera, which is abbreviated as SLR(Single Lens Reflex). This technology is to install a reflector at a 45-degree angle in front of the film plane, with frosted glass and five mirrors above it in turn. The pentaprism reflects the real image light for many times to change the optical path, and sends the image to the eyepiece, so that the image seen in the viewing window is always the same as that on the film, and the framing range is basically the same as the actual shooting range. The unique design of this prism enables the photographer to directly observe the image passing through the lens from the viewfinder.

Introduction:

A SLR Digital camera refers to a Single-Lens Reflex digital camera, that is, the English abbreviation DSLR for digital, single lens and reflex reflex reflex. Representative models in the market are common in Nikon, Canon, Pentax, Fuji and so on. In the early days, such cameras were generally large and heavy.

Advantages:

Advantages of image sensor: For digital cameras, the photosensitive element is one of the most important core components, and its size is directly related to the shooting effect. To achieve good shooting effect, the most effective way is not only to increase the number of pixels, but also to increase the size of CCD or CMOS. Whether using CCD or CMOS, the sensor size of digital SLR cameras is far more than that of ordinary digital cameras. Therefore, the number of sensor pixels of digital SLR is not only relatively high (at present, the minimum is 6 million), but also the area of a single pixel is four or five times that of a civil digital camera, so it has an excellent signal-to-noise ratio and can record a wide brightness range. The image quality of a 6-megapixel digital SLR camera definitely exceeds that of an 8-megapixel digital camera with a 2/3-inch CCD.

Rich lens selection: Digital camera is a product of optical, mechanical and electrical integration, and the performance of optical imaging system is also very important to the final imaging effect. Having an excellent lens is no less significant for imaging than the choice of image sensor. At the same time, with the cost of image sensor, image engine and storage device decreasing, the proportion of optical lens in the cost of digital camera is also increasing. All brands have a huge autofocus lens group, from super wide angle to super telephoto, from macro to soft focus, users can choose matching lenses according to their own needs. At the same time, due to the large sensor area, it is easier for digital SLR cameras to get excellent imaging.

Fast response speed: The start-up speed of digital SLR is only a few hundred milliseconds, and the continuous shooting speed is also very fast. Consumer-grade cameras, on the other hand, are pure electronic shutters, and there is a serious shutter lag problem. This weakness can be called the weakness of consumer-grade digital cameras, so it can shoot still life, but it is not suitable for capturing moving objects-the image you get is often not the action when you press the shutter. Response speed is the advantage of digital SLR. Because its focusing system is independent of imaging devices, they can basically achieve the same response speed as traditional SLR, which makes users handy in news and sports photography.

Excellent manual control ability: Although the camera's automatic shooting function is getting stronger and stronger nowadays, a user who has certain requirements for photography will not be satisfied with shooting only in automatic mode because of the ever-changing environment and shooting object. Digital SLR can easily zoom manually, set shooting parameters manually and so on, and can also take some special shots. But many consumer cameras are automatic (especially card machines). Most cameras don't have manual zoom ring, so they have to zoom automatically by motor. Because the speed of zooming and focusing is slow, many shooting opportunities will be lost. Many people think that automation is better than manual operation, which is really a misunderstanding. Cameras with automatic function but no manual function are often low-end cameras, because the accuracy and speed of automation are far from being as high as manual operation.

Abundant accessories: An important difference between a digital SLR and an ordinary digital camera is that it has strong expansibility. In addition to continuing to use additional lenses such as polarizers and interchangeable lenses, you can also use professional flashlights and other auxiliary equipment to enhance its ability to adapt to various environments. For example, high-power flash, ring-shaped macro flash, battery handle and timing remote control, these rich accessories make digital SLR adapt to various unique needs, while ordinary digital cameras are greatly inferior.