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Canon News has uncovered a patent that shows Canon is working on very small RF zoom lenses, these simple designs may also be collapsable.
In recent years, so-called mirrorless cameras, which do not have a quick return mirror, are increasing in cameras. Since this mirrorless camera has a thin body, is compact and lightweight, it is required to develop a compact and lightweight interchangeable lens that matches the mirrorless camera.
Since this mirrorless camera does not require the space of the quick return mirror, it is not necessary to secure the back focus as much as the conventional interchangeable lens. Therefore, the configuration of the lens is also different from that of the conventional interchangeable lens, and the degree of freedom in design is increased so that it is possible to design a compact and lightweight lens.
In particular, a wide-angle lens tends to have a short back focus, so that it can be miniaturized as an interchangeable lens for a mirrorless camera.
|Total Length of Lens||109.15mm||107.79mm||112.88mm|
|Canon RF 20-70mm f/4-6.3|
|Total Length of Lens||115.09mm||108.18mm||118.44mm|