What is DSLR and why it is important in photography?

“Digital Single Lens Reflex” or DSLR. In plain English, a DSLR could be a camera that produces the use of a mirror mechanism to either let light fully pass onto the image sensor (which captures the image) by moving the mirror out of the way or reflect light from a lens to an optical viewfinder, which is an eyepiece on the rear of the camera that one looks through to determine what they’re taking an image of. Single-lens reflex cameras, which use film as their recording medium, are used since the 19th century, but the primary commercial digital SLR with a picture sensor debuted in 1991. DSLR cameras frequently employ interchangeable lenses, in contrast to point-and-shoot and smartphone cameras.

DSLR cameras consist of how many parts?

Image Credit:  Wikipedia

How do these cameras work?

Everything you see through a DSLR viewfinder or eyepiece on the rear of the camera is put through the camera’s lens, so you can be looking at the precise thing you’re going to photograph. The lens transmits light from the scene you are trying to photograph into a reflex mirror (#2) that is positioned at a 45-degree angle inside the camera chamber. The reflex mirror then directs the light vertically to an optical component known as a “pentaprism” (#7). By rerouting the light through two different mirrors and into the viewfinder, the pentaprism subsequently transforms the vertical light into horizontal light (see #8).

The reflex mirror (#2) moves upward when you take a picture, obstructing the vertical path and allowing direct light through. The light then enters the picture sensor (#4) once the shutter (#3) opens. The reflex mirror (#2) drops back to a 45-degree angle and the shutter (#3) closes, continuing to focus light into the viewfinder for the duration required for the image sensor (#4) to record the image.

Of course, the procedure continues after that. Next, the camera goes through a significant amount of intricate image processing. The image sensor’s data is taken from the camera processor, formatted appropriately, and then written to a memory card. The entire process takes hardly any time, and some high-end DSLRs can repeat it more than 11 times in a single second!

The above is a very basic explanation of how DSLR cameras operate.

Leave a Comment