The Korona Panoramic View Camera was offered in 3 format sizes: 7x17 (28" bellows), 8x20 (32 ½" bellows), and 12x20" (22
¾" bellows). The tremendous reach of the bellows was accomplished by attaching a focus extension rail protruding from behind the ground glass. The rail has 2 male parts that plug into female parts at the
rear of the base rail. There is a trick to it: On the right hand side of the base rail there is a verticle retractable bumper which prevents the camera from slipping off the track. To attach the rail this
bumper must be depressed.
The Korona is: "Beautifully made of cherry with walnut finish, all metal parts nickel plated. Rising and falling front, double swing back and focus from the front or rear
with rack and pinion adjustment. The ground glass frame is pivoted in the center and recedes easily for the insertion and removal of the holder, at the same time giving a strong even pressure at all points.
The wonderful back spring device is an exclusive Korona feature found on all our cameras. You are losing business every day you are without these Panoramic Outfits."