The differences between digital cameras, telephoto cameras, and SLR cameras!

Digital cameras are a large category. The telephoto cameras and SLR cameras you mentioned are actually digital cameras. They are all imaged through photosensitive chips, and the images are directly converted into data and saved.

The difference of digital cameras is first reflected in the photosensitive chip, which is generally divided into two types: CCD and CMOS. The size of the photosensitive chip determines the image quality of the camera. The larger the image quality, the better the image quality. In most ordinary digital cameras (card cameras, telephoto cameras, wide-angle cameras, etc.), the photosensitive chip is only about 1/2.3 inches in size (telephoto cameras are generally this size). Now there is an ordinary digital camera with a large-sized photosensitive chip. Cameras, such as Canon G1X, have a 18.7×14.0mm CMOS photosensitive chip. The photosensitive chips of SLR cameras are all medium format or above, and the largest is full frame, which means the photosensitive chip is as big as a 135 photographic film. The specific differences can be seen in the picture below:

The second major difference between ordinary digital cameras, telephoto cameras and SLRs is that SLRs can change lenses, and because SLR lenses have larger lenses, the lighting effect is better. There are many large-aperture lenses that can produce better results even in low light or at night without a flash. Ordinary digital and telephoto cameras, even with optical image stabilization, often blur the image when shooting people.

The dozens of times zoom of a telephoto camera is indeed more convenient and can be used for shooting in multiple scenes. It is also much lighter than a SLR and is suitable for ordinary households. However, the photos taken with it are noisy (I I have personally tried it), it is not as good as the Canon G1X, let alone a DSLR.

The third difference between SLRs and ordinary digital cameras is that their viewfinders are different. SLRs generally use an optical viewfinder (pentaprism or pentagonal mirror), while ordinary digital cameras use Electronic viewfinders, some don't even have a viewfinder, just a screen. The biggest advantage of the optical viewfinder is that the time lag in taking pictures is very small. Basically, what you see is what you take the picture (how fast the speed of light is). The electronic viewfinder always has more or less lag, which is very frustrating when taking pictures of moving objects, especially high-speed objects. What you take is often not the picture you see in the viewfinder or on the screen. .

Actually, telephoto is really boring. If you have played with digital cameras before, are familiar with manual shooting, and understand basic knowledge such as aperture, shutter, ISO, white balance, etc., then it is good to buy an entry-level SLR, such as Canon 650D. , after you get familiar with it and upgrade it, you can only change the body but not the lens (except for full-frame cameras, which can only use EF lenses).

If you are only used to point-and-shoot fully automatic shooting, I suggest you buy a Canon G1X (equivalent to 35mm focal length: 28-112mm). The photosensitive chip is large and the image quality is much better. When traveling, take photos The scenery and people are very good.