Canon Rumors interprets the data and drawings ... The patent describes multiple potential f/8 lenses, including a 21mm and 27mm, that use few pieces in order to maintain a compact size.
Fujifilm and Nikon are two companies that have recently focused on giving us a lighter setup with their Fujifilm 27mm f2.8 R WR and Nikon Z 26mm f2.8. And now, it seems that Canon may be catching ...