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.
Rating Newest Oldest. Best Answer: SLR stands for Single Lens Reflex. This dates back to film camera days to a degree. Rather than having a seperate viewfinder, an SLR camera used a mirror system to reflect light to the viewfinder, snapping out of view when you want to expose the frame.In the digital world, you generally have a live preview option, along with an optical viewfinder that was slightly off of the actual lens. D-SLR camera (Digital-SLR) generally lacks a realtime LCD preview, since the mirror is in the way, although newer DSLR cameras do offer the ability to offer the traditional preview like a standard digital.