Could you please explain what a SLR camera is?

SLR camera is the abbreviation of single-lens reflex viewfinder camera. It refers to a camera that uses a single lens, and the light shines on the reflector through this lens, and the viewfinder is taken through the reflection.

1. The so-called "single lens" means that the photographic exposure light path and the viewing light path use one lens. It is not like a rangefinder camera or a twin-lens reflex camera that has an independent lens for the viewing light path.

2. "Reflection" means that a flat reflector in the camera separates the two light paths: when taking pictures, the reflector falls down and reflects the light from the lens to the pentaprism and then to the viewfinder window; when taking pictures, the reflector is raised quickly, allowing light to shine through.

to film or photosensitive element CMOS or CCD.

The advantage of a SLR camera over a rangefinder camera is that what you see is what you get, and the imaging angle in the viewfinder is the same as the final angle of the film.

The two main differences between SLR cameras and ordinary cameras are: 1. The most important feature of SLR cameras is that they can replace lenses. Photographers can use lenses of different focal lengths according to different situations to achieve their own shooting purposes, and SLR cameras have

Full manual function, so its shooting range is much wider than that of ordinary cameras; 2. The imaging quality of SLR cameras is much better than that of ordinary cameras. First, because its lens quality is much better than that of ordinary cameras (good lenses are often better than ordinary cameras).

The SLR body is even more expensive), and secondly, because its photoreceptor area is much larger than that of an ordinary camera (several times or even ten times), of course the size of the SLR is also much larger.

Extended information The main components of an SLR camera: 1. The reflector is used to reflect the image used for viewing through the photographic lens to the focusing screen; the reflector is a piece of glass coated with silver reflective material on the surface (note that it is not like a mirror)

That means the reflective material is plated on the back of the glass instead of the top. Therefore, when maintaining the camera, you should wipe the reflector as little as possible. Even if there is dust on the mirror, it will not affect the image).

Before exposure, the function of the reflector is to change the light path and reflect it into the viewfinder, so that the operator can correctly compose and focus.

Before the shutter opens, the reflector flips up to clear the light path, and then the shutter opens and the light reaches the film plane for exposure.

After the exposure process is completed, the reflector immediately returns to its original position, which is an instant-return reflector.

2. The focus screen is used to check the focus.

The focusing screen is equivalent to the ideal film plane, that is, the distance from the reflector to the focusing screen is equal to the distance from the reflector to the film plane.

It is usually a frosted glass Fresnel lens. Before exposure, the focusing screen replaces the film plane and is used to focus.

When the focus is accurate, a clear image will appear on the focusing screen.

3. The function of the pentaprism viewfinder is to correct the upside-down image on the focusing screen so that the image seen through the viewfinder is completely consistent with the orientation of the scene directly seen.

A pentaprism is usually made from a solid piece of glass that has been cut and ground, and then coated with reflective material on the outside (except for the two surfaces connected to the focusing screen and viewfinder eyepiece) to form a mirror reflection inside.