Digital camera lens and the film is not on the front line of light is what? What optical instruments are there?
This type of digital camera can also zoom, but the zoom than the top five times, not great.
the internal 45 ° mirror, the light reflected into the vertical lens group, in the bottom of the sensor imaging.
This type of digital camera such as Sony's T series, Fuji Z series, etc., the lens window is a glass,
What you said is probably a periscope card machine.
