"4 photographic papers (EfKeBROM, deadline for use expired in 1974.) size 18/24 cm inserted in cylindrical panoramic camera and exposed (through 4 pinholes at the same time) during 360 seconds, processed, negatives scanned, sticked in single image (with pixaround), inverted to positive."
"©ame®@ obs©u®@ TETRA for panoramic imaging is designed by obs©u®@s ©®oati@. The body is cylindrical can of coffee (Ø=220mm h=250mm), divided into four chambers and four pinholes (f=67mm, d=0,253mm one for each chamber). Image (on photo paper 4x18/24cm) cover 85% of the spheres."