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.