What is a digital SLR camera?

To give you a comparison between a digital SLR camera and a card camera, you will clearly know what a digital SLR camera is\x0d\1. Different structures\x0d\ SLR digital cameras have more contact with ordinary consumers. Digital cameras are two completely different systems. The difference mentioned here is mainly reflected in the internal structure of the two. Like traditional SLR cameras, they adopt a special structure. Digital SLR cameras fundamentally solve the problem of aberration, that is to say, from What you see inside the viewfinder is the image that will be exposed on the film. Since ordinary digital cameras use CCD sensitivity mode, what you see on the LCD is the image felt by the CCD. That is to say, the photographer is on the LCD screen. What you see is the image you are going to take, and there is no aberration problem, so ordinary digital cameras can also take good macro shots! So from this point of view, SLR cameras have no advantage. \x0d\ 2. Shutter problem \x0d\ Ordinary digital cameras are sufficient for ordinary users to take photos of this trip, but their shutter speed is extremely demanding for photographers who have higher requirements and need to adapt to harsh shooting environments. Importantly, the fastest shutter speed in ordinary digital cameras is extremely important, which is maintained at about 1/1000 seconds, while the fastest shutter speed of SLR digital cameras can easily reach about 1/10000 seconds. Such a fast shutter speed makes ordinary digital cameras It is beyond reach and is very suitable for photographing the ecological environment. \x0d\ 3. Different lenses \x0d\ When it comes to SLR digital cameras, many people will talk about it having a variety of supported lenses. Some people think that the biggest difference between SLR digital cameras and ordinary digital cameras is that an interchangeable lens and another One is not, which may seem reasonable at first glance, but it is not true if you think about it carefully. For example, Olympus' E20P is a SLR digital camera with non-interchangeable lenses. Of course, most SLR digital cameras on the market are supported by a supporting lens group. During shooting activities, we can change different special effects lenses, view different special effects through the viewfinder, and finally choose the appropriate lens to try shooting. SLR digital cameras not only support a wide range of supporting lenses, but more importantly, they also have lens specifications that are beyond the reach of ordinary digital cameras. \x0d\\x0d\ First of all, as for the shooting effect at the wide-angle end, most ordinary digital cameras stick to the 35mm ~ 38mm position. The lenses of a few high-end models support 28mm wide-angle, but SLR digital cameras can usually take pictures with the original lens. Delightful wide-angle landscape photos, with a special wide-angle lens can even continue to expand the visual range. \x0d\\x0d\　Secondly, digital cameras are very sensitive to shake. Even a slight shake during the exposure process will produce blurry photos. If ordinary digital cameras are not high-power zoom lens models, many do not have anti-shake. Practical function, while SLR digital cameras can be equipped with an external lens to prevent the camera from being unstable and shaking during shooting. \x0d\\x0d\ In addition, the lens part is also closely related to the image quality. Comparing the lenses of most ordinary digital cameras and SLR digital cameras, we can see that the lenses of ordinary digital camera lenses are very small and are not proportional to the diameter of the lens barrel. Some The lens of the model is only about 1/3 of the lens barrel diameter, while the lens of the SLR digital camera lens is basically the same as the lens barrel diameter, which also results in a huge difference in the optical performance of the two systems. In short, having one more lens to choose from will provide you with more protection when shooting. A good lens can complete the shooting work calmly and comfortably.

\x0d\ 4. Difference in area of ??photosensitive material \x0d\ Most digital SLR cameras use 2/3 of the full frame as photosensitive material. A few high-end products achieve the full frame (that is, the same size as 35mm film), often The area of ??ccd is several times larger than that of ordinary digital cameras. Therefore, the noise point control of digital SLR is generally very small, while the noise point control of ordinary digital cameras is much worse. For example, the noise point control of 800w canon 20D and 800w sonyf828 is too different. It’s so big that it’s simply incomparable!