|Focal Length (mm)|
|Max Aperture (f)|
|Min Aperture (f)|
|Flange-Focal Distance (mm @ ∞)|
AICO 75/3.5 [v3]
Version 3 enlarger lens with silver or black body. Serials from 12xxxx (still marked Anastigmat) have a curved 5-blade aperture like Phago 75.3,5, which may indicate a revised optical formula vs Version 2. Later versions dropped the ‘Anastigmat’ marking. All versions made in Japan, including a black model marked AICO-PSL.