Schneider G-Claron 210mm F9.0
Copy lens 4x5
The G-Claron is a lens of symmetrical design with six elements in four groups, optimized for 1:1 reproduction. The normally used range of linear magnifications is 5:1 to 1:5. The G-Claron may also be used for distances up to infinity by stopping down to f/22 or less.