How to print the photos taken by SLR?

There are many ways to develop digital photos.

1, printed by color printer;

2. Go to the nearest physical photo studio to expand;

In addition, online photo printing is more convenient and economical.

Imaging principle

In this system, the unique design of the mirror and prism enables the photographer to directly observe the image passing through the lens from the viewfinder.

It can be seen from the structural diagram of a single-lens reflex camera that the light reaches the reflector through the lens and is reflected to the focusing screen above to form an image. Through the eyepiece and pentaprism, we can see the scenery outside in the observation window. The light passes through the lens and is reflected by the reflector to the frosted viewfinder. Through the convex lens and reflected in the pentaprism, the final image appears in the viewfinder. When the shutter is pressed, the mirror moves in the direction indicated by the arrow, and the mirror is lifted to take an image on the CCD, which is consistent with what is seen on the viewfinder screen.

Compared with paraxial cameras, SLR cameras have the advantage that what you see is what you get, and the imaging angle in the viewfinder is the same as the final film. However, compared with paraxial camera, the back focus of SLR camera lens should be able to image at the focal plane of reflector and photosensitive element at the same time, and false focus must be generated before imaging at the focal plane, which makes the structure of SLR camera optical lens more complicated and larger, and the imaging effect is not as direct and transparent as paraxial camera. At the same time, the volume of the "reflector" should be large.