Canon EF 70-200mm f/4L IS II USM (Canon EF, APS-C / DX, full size)
CHF1539.–

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

Canon EF, APS-C / DX, full size

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

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hedybluntschli

1 month ago

Hello, I am a little confused because I have received different information regarding compatibility of this lens (EF 70-200 f/4L IS II USM) with the Canon Extender EF 2xIII I have a R5 mk2 camera and would like to know if they are compatible or not. Many thanks

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digitec

1 month ago

Helpful answer

The Canon EF 70-200mm f/4L IS II USM lens is generally compatible with the Canon Extender EF 2x III, as it has a recessed rear lens element structure that allows the extender to be used. However, when combined with certain camera models, such as the Canon R5 Mark II, there may be limitations in the autofocus function, especially in normal viewfinder mode. The autofocus performance may be reduced or only work reliably in Live View mode. It is important that the extender is first attached to the lens before the combination is mounted on the camera to ensure correct detection. The Canon R5 Mark II supports autofocus at apertures up to f/8, which is relevant when combined with the 2x extender (which reduces the aperture by two stops). As the lens with extender has a maximum aperture of around f/8, the R5 Mark II should in principle allow autofocus, but there may be limitations in practice. To summarise: The lens is mechanically and electronically compatible with the Canon Extender EF 2x III, and the Canon R5 Mark II can in principle utilise this combination, but autofocus performance may be limited depending on the situation.

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eugen6533

7 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

7 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