Dust Donut Upgrades the Weather Sealing of Any Canon EF Mount Lens

About three quarters of the EF-mount lenses out there are not weather sealed. Because of this, using those lenses often leads to more frequent sensor cleaning, dust and even water accumulation inside your camera body. Fortunately, a simple but effective idea from California-based photographer Tyler Sterbentz fixes that problem. It's called the Dust Donut: When