Canon used to make a very good f/4.0 24mm to 105mm zoom lens for their EOS mount.  I am guessing that they will have an R-Series equivalent.

The EOS version was used by many of my Canon shooting friends, who praised this lens for its good all round performance.  It was part of Canon's L Series line up of top tier lenses.

OMG! You are not even a number, not even a human being!

No worries.  I do have a number, just not applied for the card.  I'm human!   

Hi everyone, I’m new to photography and currently using a Canon camera. I’m looking for a lens that’s easy to use, sharp, and suitable for both portraits and daily shooting. Do you have any recommendations that offer good image quality without being too difficult for a beginner?

No, I haven't even got the my number card.   

OMG! You are not even a number, not even a human being!

But from a pure sales logic there never  should be lenses like The Plena or the Z-Noct.

One of the best decisions Nikon ever made was to take the opportunity of the shift to mirrorless cameras to design a new mount. The large diameter and short flange focal distance of the Z mount gives lens designers opportunities they did not have in F mount. As a result, the Z mount lenses are consistently better than their F mount predecessors - but "consistently better" doesn't make headlines. The Noct and the Plena were intended to make headlines. Nikon said that the Noct "serves as the symbol of the superior optical performance achieved with NIKKOR Z lenses. It takes advantage of the superior design flexibility made possible by the combination of the large-diameter (inner diameter of 55 mm) Z mount and 16 mm flange focal distance to realize an f/0.95 maximum aperture, the fastest in Nikon history".

Nikon also has a track record of making lenses and cameras just for engineering reasons. The Nikon Camera Chronicles FM3 story makes it very clear that the camera was made because the engineers wanted to have one more try at making the perfect manual film camera before the digital tsunami swept both the market and the engineering expertise away. The Z6 was made to see how good an electronic SLR could be. They didn't expect to sell a lot of either camera, because they made no attempt to manufacture a lot. Having made the decision to structure the Z system around optical design they were always going to see what the engineering limits were, even if the result didn't sell a lot.