What is the smell of Leica? Why does Lycra smell? !

I remember there is a saying that "Leica's classics can shut up all the powerful ones." Oh my god, Leica is indeed a classic. It is not only a classic with a high price, but its brand and charm are even more classic! Any Leica camera accessories are guaranteed to be supplied for 30 years. In today's rapidly changing digital electronics era, Moore's Law of 18 months seems to be a little longer. 30 years of accessories supply also explains from one side what is classic! It can also shut up followers hehe. (The pictures below were taken by collecting Leica machines or lenses on the Internet) I have a few old Zeiss and Meyer lenses, and I tried them out for their hair color, color, burnt bokeh, light ratio control and image quality. Today's automatic lenses are completely different. (It is said that the Japanese admire German industrial technology, especially the design of optical lenses. Someone once commented that Pentax's fixed focus three princesses are very similar to the German head design.) What is the specific difference? I am confused. There are no words to describe it. So the taste of Leica is more and different? Only you can realize it slowly:) The following text is excerpted from the photography forum: ====================================== ================================================== ======= Regarding image quality, if Leica can achieve its goal with a 7-element design, but other manufacturers have to use 11 lenses for correction, then the image quality can definitely be distinguished. Regarding cream and space cutting, the background of the photos taken by the Leica lens is particularly beautiful and natural (the same is true for the Zeiss lens). Players often say that the "Bokeh" of the Leica lens is very special - the inner focus is like space cutting, and the outer focus is like Creamy. In fact, when designing lenses, major Japanese optical factories have been studying how European lenses are able to design such excellent lenses. In addition to faithfully restoring the colors you see, the three-dimensional sense of the scene, the details of light and dark, and the transition of color levels. It is so natural. What the Japanese admire the most is the blurry bokeh behind the focus. When designing a lens, Germany does not always use ED, APO lenses, or aspherical designs like Japan, but when it is really needed Only in this way can we achieve the best effect with the simplest design and the fewest lenses (precise lens grinding and optical axis assembly accuracy). Perhaps the resolution at the maximum aperture cannot be as good as that of a sunglass, but the focus The performance of the external phase and the inner focus level and color are often beyond the reach of sunglasses. Once the aperture is narrowed, the overall optical quality is greatly improved, making it beyond the reach of sunglasses. About the difference between LEICA and ZEISS The difference between Zeiss and Leica is that: Zeiss focuses on High-contrast representation of low-frequency spatial frequencies without focusing on high-frequency spatial frequencies. Zeiss's design system of compensating for production tolerance doesn't work here at Leica. Leica's design requirements implied rigorous correction for spherical aberration and chromatic dispersion, and required a deep understanding of the fundamentals of lens design - let's call them optical properties. It may take you more than a year to fully understand what a proposed design can achieve. A design that can record good contrast at high spatial frequencies requires very little latitude. The reproduction of extremely fine detail contrasts is extremely sensitive to errors in focus and process correction. Leica lenses are designed from the beginning by a design team composed of optical engineers and mechanical engineers.