Vivitar lenses use a variety of mounts, including Canon, Nikon, Sony, and Pentax. Each mount is specific to a particular camera brand, so it's important to choose the right one when purchasing a Vivitar lens.
Canon-mount Vivitar lenses will work with any Canon DSLR camera. Nikon-mount Vivitar lenses will work with any Nikon DSLR camera. Sony-mount Vivitar lenses will work with any Sony DSLR camera. Pentax-mount Vivitar lenses will work with any Pentax DSLR camera.
When choosing a mount for your Vivitar lens, be sure to check compatibility with your camera body to ensure proper function.