Selektor

Philips recently introduced a unique, electronic system for making photo-graphic colour enlargements from either negatives or slides. Designated the Electronic Tri-one Colour System (ETC), the system com-prises a universal enlarger equipped with a built-in colour light source which is electronically controiled via a separate control unit at the baseboard. Use is made of the principle that by mixing the three primary colours, red, blue and green, any colour can be reproduced.