Antique Emil Busch Rapid Aplanat No. 4 Brass Lens – 12" f/8 – Circa Early 1900s
This lens, produced in the early 1900s, is a classic example of the Rapid Aplanat (also known as Rapid Rectilinear) design, renowned for its sharpness and minimal distortion. Model: Rapid Aplanat No. 4.