Additional types of files may also be using the SCU file extension. If you are aware of any other file formats using the SCU file extension, please contact us so that we can update our information accordingly.
What does SLR mean in photography? It stands for Single Lens Reflex It is a type of camera that uses 1 lens. A long time ago they used cameras with 2 lenses, 1 to see thru and 1 to take the picture with, but noâ¦w they use cameras with 1 lens to do both.
A lens of one diopter is a lens having a focal distance of one meter, a comparatively weak lens; a two-diopter lens is one having half the focal length of the one-diopter lens or half a meter; a lens of a focal length of four meters is called and 0.25 diopter lens.