Kaiser frame

For all Kaiser enlargers. For filter inserts size 8.5 x 8.5 cm this is an adapter for using 75x75 filters in the Kaiser filter tray analog photography exposure of colour paper (the aditive way) with filters LEE Tricolor RED 25 Green 58 and Blue 47b LEE Tricolor RED 25 Exposure: 2½ – 3 Separation filter. Maximum transmission above 610 nanometres. Also used for b/w contrast effects, haze penetration in aerial photography, and removing blue in infrared photography 58 Tricolour Green Exposure: 2½ – 3 Separation filter. Maximum transmission at 530 nanometres. Polyester 47B Tricolour Blue Exposure: 2½ – 3 Separation filter. Maximum transmission at 440 nanometres.