Pentaprism in SLR

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A pentaprism is an integral component in single-lens reflex (SLR) cameras that facilitates the viewing of the image through the lens without any inversion or reversal, providing a correct orientation for accurate focusing and framing. This optical device splits the incoming light path and diverts it to the viewfinder, ensuring that the photographer sees exactly what the camera's sensor will capture when the shutter is released.