ความคิดเห็นที่ 40
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Summicron
Refers to the maximum lens aperture — here ƒ2.0. There are many guesses how this name came about, the most popular being that the "summi" came from "summit" (of lens performance) while the "cron" came from "chroma" (ie. for colour).
Summilux
Refers to the maximum lens aperture — here ƒ1.4. "Summi" for "summit of performance" (same root as "Summicron"), with "lux" added for "light" (ie. enhanced light gathering abilities).
Elmar
Refers to the maximum lens aperture — here ƒ3.5. Historically derived from the original 1925 50mm ƒ3.5 Elmax lens, which was an acronym of "(E)rnst", "(L)ieca" and "Professor (Max) Berek", designer of the original lenses. Later that year the 50mm ƒ3.5 Elmar superceded the Elmax, which was discontinued due to its complexity and high cost of manufacture. [6]
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lol
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27 มิ.ย. 50 09:59:42
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