The third tale discusses the W-NIKKOR 3.5cm f/1.8, our "S" / "L"-mount interchangeable lenses.
This lens, first released in September 1956, is the brightest wideangle lens in the world. The body associated with it was the Nikon S2, but this was followed by the SP the following year, then the S3 the next, so you should understand that it was developed to match the concepts and designs of the SP and S3 as well.
The optics were designed by Senior Manager AZUMA, Hideo of the Optical Design Section, and the design was completed in the winter of 1955.
Azuma was one of the teachers of WAKIMOTO, Zenji (mentioned in the first tale), and had extensive experience in designing "S" / "L"-mount Nikkor lenses.
He made an enormous contribution to improving Nikkor lenses, especially in laying the foundation for aberration balancing.
At the time he was active in the field, Dr. Ludwig BERTELE was also active in the field in Germany.
This expert Japanese designer is little-known outside the industry, but his achievements can be traced through his countless reports and patents.
He filed the patent application for the large-diameter, wideangle lens in 1956, and was granted the U.S. patent in 1959, signifying general recognition that this was indeed a new type of lens.
At that time, most 3.5cm lenses were in the f/3.5 to f/2.5 range, and this was the first lens of f/2 or faster in the world.
It took another one to five years for competitors such as Ernst Leitz to develop similar lenses.
At that time, the tools of the designer were the abacus and the logarithmic table...... a staggering amount of computation and time must have been needed.
To be a lens designer back then required enormous determination and