1 , What are dslr cameras :
SLR digital camera refers to a single-lens reflex digital camera, namely Digital Digital, Single alone, Lens Lens, Reflex reflective abbreviation DSLR. Current common market digital SLR camera brands: Nikon, Canon, Pentax, Fuji and so on.
2 , the working principal of DSLR cameras:
After working in the digital SLR camera system, the light reaches the mirror through the lens, refracting and focusing screen to the top of the image formed by the eyepiece and pentaprism, we can see the outside scene in the viewfinder. In contrast , the general digital camera only (EVF) to see the captured image through the LCD screen or electronic viewfinder. Clearly seen directly by processing the image than the image seen more conducive to shooting.
When shooting in DSLR, when you press the shutter button, the mirror will pop up, sensor (CCD or CMOS) front shutter curtain will open simultaneously, through the lens of the light will be projected onto a light-sensitive photographic originals, and then after restitution mirror will immediately be able to see the image in the viewfinder again. This construct single-lens reflex camera, which is completely determined by the lens focus shooting , as it can always be seen on the viewfinder image and film, it 's shooting range and is basically consistent with the actual shooting range very beneficial intuitive framing .
Now you know What are dslr cameras.