What is the difference between a digital camera and a DSLR?

Difference between a digital camera and a DSLR: different focal lengths, different prices.

1, the focal length is different

The actual focal length of the SLR is greater than the ordinary digital camera, that is to say, the same 135 equivalent 50mm focal length, the actual focal length in the full 135 digital is 50, the actual focal length of the APS format machine is about 35;

And the ordinary digital camera is about 10mm or so, which leads to the SLR This results in the depth of field of the SLR is smaller than the ordinary digital, SLR is more likely to send a clear foreground, rear view blurred or rear view clear, clear foreground and other effects of the photo.

2, the price is different

SLR due to the more expensive, the use of image processing chip capability is stronger, so the SLR machine to reflect far faster than ordinary digital, even if now reflect the faster of the ordinary digital camera, and SLR still have a certain gap.

Imaging principle

Single-lens reflex camera construction can be seen in the picture, the light through the lens to the reflector, reflected to the focusing screen above and form an image, through the eyepiece and pentaprism, we can see the outside world in the viewing window. Light passes through the lens and is reflected by the reflector into the frosted viewfinder screen. Passing through a convex lens and reflected in the pentaprism, the final image appears in the viewfinder frame. When the shutter is pressed and the reflector is moved in the direction indicated by the arrow, the reflector is raised and the image is captured on the CCD or CMOS as seen on the viewfinder screen.

Reference for the above: Baidu Encyclopedia-Single Lens Reflex Camera