A demonstration of a varifocal lens. The left image is at 2.8mm, in focus. The middle image is at 12mm with the focus left alone from 2.8mm. The right image is at 12mm refocused. The close knob is focal length and the far knob is focus. The lens is a Tamron 2.8-12mm f/1.4 CCTV lens in the CS-Mount for 1/3" sensors.
{{Information |Description=A demonstration of a varifocal lens. Left image is 2.8mm, in focus. Middle image is 12mm with the focus left alone. Right image is 12mm refocused. The lens is a Tamron 2.8-12mm f/1.4 CCTV lens in the CS-Mount for 1/3" sensors. |