From The Official Book of The Deadheads:
Before the Dead encore at the Warfield, a table with glasses of champagne was set up on stage. Unknown to the band, promoter Bill Graham, had his workers, also pass out champagne to the crowd, knowing the fans wouldn’t toss the bubbly around.
The band came out and raised its glasses for a toast. Suddenly, Graham flipped the switch on special London air-raid lights that revealed the crowd of 2,200 toasting the band. A garland of roses hung from the balcony reading, “Thank You!”
(The San Rafael, California) Independent - Journal. 11/25/1980
Tech talk: The Zeiss-Ikon Conterax Hologon camera system was used for capturing this image. It utilizes the Conterax camera system design, with removable film backs for switching between Color and B&W films. The camera has 3 speeds, 15th, 250th and a 1000th of a second. The lens is a fixed f’8 aperture. The Hologon lens’s 15mm wide capture is not a fish eye, but a corner to corner distortionless lens when held level and plumb. Its rangefinder design makes it quiet and the grip, handheld with a shutter release makes it a beautiful camera to create with. This Black and White image was shot on Tri-X 400 film pushed to 1600 ASA developed in Diafine film developer.