Knowledge in lens

SLR camera

Single-Lens Reflex Camera Light is bounced from a mirror through a pentaprism to the viewer's eye while choosing the object for photography. The shutter button lifts the viewing mirror while opening the shutter to allow the light to fall on the detector to record the image

Focal length of lens

The focal length of the lens is the distance between the lens and the image sensor when the subject is in focus, usually stated in millimeters (e.g., 28 mm, 50 mm, or 100 mm). In the case of zoom lenses, both the minimum and maximum focal lengths are stated, for example 18–55 mm.

lenses

These are compact and brief notes of topic lens