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Wow! Canon has introduced another zoom lens for its still relatively new series of full-frame mirrorless cameras in the EOS-R series that is really out of the ordinary. After the RF 70-200mm f / 2.8L IS USM, which is already very compact for its class, the Japanese are now introducing a somewhat weaker lens variant with the same focal length range. The RF 70-200mm f / 4L IS USM also belongs to the high-quality L series and, like its big brother, comes with a white (less heat-sensitive) housing. The special thing is self-explanatory when you look at the pictures:

As far as I know, there has never been such a compact high-end class 70-200 with AF and IS for full format. In fact, the RF 70-200mm f / 4L IS USM is only marginally longer than the standard RF 24-105mm f / 4L IS USM, and Canon says it is “World’s shortest and lightest interchangeable lens with this focal length range and a constant light intensity of 1: 4”. As with the 2.8 variant – and in contrast to its earlier EF lenses of this focal length – Canon uses an extendable tube for zooming instead of an internal one. As a result, the lens does not have a constant length when in use, but is correspondingly shorter and easier to transport when retracted. Here are a few comparison pictures:

The new 70-200 f / 4 makes few compromises in terms of quality. The optical construction of 16 elements in eleven groups contains four UD lenses (Ultra-low Dispersion) against chromatic aberration and ASC (Air Sphere Coating) coatings against flare and ghosting are used. The aperture is composed of nine rounded blades and Canon promises the highest image sharpness with all focal lengths and subject distances up to the edges, even with an open aperture.

If you can do without a slightly higher light intensity (which should often be the case given today’s ISO capabilities of the cameras), you can save not only space and weight, but also a lot of money – it is around 1,000 euros cheaper compared to the 2.8. Certain losses in bokeh due to the smaller aperture can at least partially be compensated for by reducing the recording distance. The new 70-200mm F4 also has a slightly lower close-up limit than its 2.8 counterpart (0.6 instead of 0.7 m) and a slightly higher magnification factor (0.28x instead of 0.23x). The optical image stabilizer in the lens (IS) in connection with the EOS R / RP should offer about five f-stops for shake compensation and on the R5 / R6 in combination with their sensor stabilization up to 7.5 f-stops.

Something overshadowed by this novelty, but no less important, is the idea of ​​the RF 50mm F1.8 STM. This is basically the legacy of the 50mm standard lens for Canon’s EF mount known as the “Nifty Fifty”. This is considered a particularly good and inexpensive variant for a 50mm lens that should not be missing in any photo bag. The new RF mount variant is based on a very similar optical structure that only seems to have been adapted for the special features of the mirrorless RF mount. In terms of price, too, it is roughly based on its EF predecessor.

Both lenses are expected to be available from December at an RRP of 225 euros ?? for the RF 50mm F1.8 STM and 1,755 euros ?? available for the RF 70-200mm F4L IS USM.

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