![]() ![]() Wakimoto wondered why, then, did the Xenotar structure achieve higher resolution? He compared residual aberration in detail, but could find no clear reason. The Gauss structure clearly outperforms in terms of its ability to correct spherical aberration, coma, and chromatic aberration. He thought it would be superior to a five-element Xenotar structure. The lens initially had a six-element Gauss structure. The trial lens he developed with the Xenotar structure finally achieved satisfactory results in terms of resolution. As a last resort, Wakimoto proposed a design that used a Xenotar structure. Even after many attempts, Koana remained unsatisfied. However, none of them provided the target resolving power. Wakimoto began designing the lens with the same assumption, and came up with several solutions. If that is the case, anyone would immediately consider a Gauss structure to be best. The optics had to exhibit little residual aberration, be structured to resist aberration fluctuations at short distances, and maintain speed (brightness). The system had to support focusing on objects at any distance from the lens, from infinity to close-up at life size. ![]() Initially, he thought a structure with symmetrical optics that made it resistant to aberration fluctuations at close distances was vital in designing a micro lens. Wakimoto told me about the difficulties they faced in developing the lens. This lens had a unique Xenotar structure. The Micro-Nikkor 5cm f/3.5 for Nikon S cameras was released in 1956. Azuma was a classmate of Koana's and a mentor to Wakimoto. Upon receipt of this request, Hideo Azuma and Wakimoto began developing a Micro Nikkor that would satisfy Koana's requirements. Professor Koana and WakimotoĪs I mentioned in Tales 25 and 26, the first Micro Nikkor lens was developed in the days of the Nikon S camera in response to a request from Zyun Koana, who was a professor at the University of Tokyo at that time. What concerns did Wakimoto have and how did he resolve them? As always, let's delve into the lens' history to find out.īy Haruo Sato I. In this Tale, we will uncover the secrets of the Micro-Nikkor 55mm f/3.5 lenses. It was also the signature lens of one of the great Nikkor designers, Zenji Wakimoto. This is the lens that firmly established the Micro Nikkor name. Do not dry clean.In Tale 85, we will look at the Micro-Nikkor Auto 55mm f/3.5. The single bar indicates a milder process. The F represents hydrocarbon solvents, which is a more environmentally friendly and mild process. The garment may be professionally dry cleaned. The P represents perchloroethylene solvent. Tumble dry possible at normal temperature. A box with a circle inside represent tumble drying. The temperature is to be a maximum of 40°. Hand wash only as your clothes are too delicate to machine wash. The number in the tub is the maximum temperature, for example 40°. A washtub with a double bars (two bars) indicates a very mild washing process and spin. The machine will wash with a medium machine action and mild spin. A washtub with a single bar (one bar) indicates a mild washing process. A washtub with no bar will use the maximum action with a normal spin. The amount of agitation is specified by bars underneath. The recommended washing temperature is shown by the number inside the washtub. ^ Back To Top The washtub symbol indicates if your garment is suitable for washing. The actual lengths will vary according to the style. These are inside leg measurements and are a guide only. More size guides? Size Guide › How to Measure › Washing Symbols › Care Guide › Menswear Tops, Knitwear, Casual Jackets and Shirts Select product type to display the corresponding size guide below: ![]()
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