Canon EF 70-200mm f/4L IS II USM (Canon EF, full size, APS-C / DX)
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Canon EF 70-200mm f/4L IS II USM

Canon EF, full size, APS-C / DX

Questions about Canon EF 70-200mm f/4L IS II USM

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eugen6533

6 years ago

Hallo. In eure Beschreibung steht "...Präzisionsoptik mit Fluorit-Linsen". Es gibt anscheinend ein Missverständnis, denn in bekannte FotoSeite "DPreview", wurde wie folgt kommentiert, Zitat: "It's a fluori-ne coating, not a fluori-te element. This means that the glass is treated with a fluorine-based chemical that affixes itself to the surface, and acts as a stain repellent. It's got literally nothing to do with fluorite crystals, except for the actual fluoride atoms present in both." und, "I inquired on Quora, as to what a "fluorine coating" means. It's a marketing term for Teflon." Also, was sagt Digitec, bzw Canon.ch?

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Brimstone

6 years ago

This is effectively called fluorine coating in German. However, I'm not quite sure if it doesn't still have fluorite elements on/in the camera and not just on the lens itself as a dirt and water repellent. After all, one would not define a lens by a coating, but rather by its function. Quote: A fluorine coating reduces the adhesion of dirt and water droplets to the front and rear lens. The EF 70-200mm f/4L IS II USM's fluorite lens elements correct chromatic aberrations and ensure high resolution with high-contrast colours. Siehe: https://de.canon.ch/images/20180607_pressrelease_70-200mm_de_final_tcm88-1682633.pdf