Distance 500ft (152 meters). Full moon night 1-25-2005. f/2 iris. 1600 speed film. Pentax MV1 ASA setting - stepped down to 800 ASA. Pentax MV1 SLR 50mm Lens with auto-shutter timing. Angular width of image is approx. 11 degrees.
Comments: In this image, the camera is looking directly down the optical axis of the green laser beam. The green laser glare overwhelms the car headlight. At this distance, the beam diameter is about 4 1/2 inches. The glare effect photographed here is very similar to what was seen with the naked-eye. The glare of the beam overwhelms the eye and blinds the observer's peripheral vision. Immediately after turning away from the beam, a brief one-second flash-blindness was experienced. No prolonged flash-blindness occurred. The glare and brief flash-blindness were very similar to what is seen when a driver in the opposite lane on a two-lane highway goes past you with their high beams on. A brief one-second after-image of the beam's center was seen. The after-image was a one arcminute-or-less point.
The green laser was stationed two feet to the photographic right of a car headlight. The car's second headlight was opaqued with masking. This image is the true orientation of the photograph. The thumbnail of this image is rotated 90 degrees.
This image is cropped to eliminate a large scratch on the film negative and is scaled to 60% to match the relative size of this image with the 500ft low beam headlight with passing car view. This image is exposed at 800 ASA; the 500ft low beam with passing car view at 1000 ASA.
K. Fisher fisherka@csolutions.net (1-26-2005)