Any photographer worth their salt knows that at some point, they’re going to be losing lens caps – either while out in the field or somewhere at the bottom of their bag. Most of us have spares, but for those who don’t Canon may have an answer to your problems. The Japanese camera manufacturer has recently filed a patent (number 2019-113645) in its home country for a barn door-like lens cap that simultaneously works as a lens hood as well. First spotted by Canon Watch, the “invention works as a lens hood function at the time of shooting and as a lens protection function at the time of non-shooting, thus eliminating the need for lens cap attachment / removal and barrier opening / closing operations”. The idea behind Canon’s design is that it will be permanently attached to the lens, so losing another lens cap might be a thing of the past.  However, Canon only uses the term “digital camera” in the patent, so whether the new lens cap design will make its way to the new RF-mount lenses or the older EF, EF-M or EF-S lenses remains to be seen. Instead, the patent seems to be for lenses with extending barrels that are typical for point-and-shoot snappers. There have been solutions for ...