Enhance your photographic experience with the Vintage Vivitar Automatic Tele Converter 3X-4, designed to work seamlessly with Canon FD mount cameras. This teleconverter multiplies your camera's focal length by 3X-4, allowing you to capture distant subjects with clarity and detail. Crafted with precision in Japan, it's a lightweight addition to your gear, weighing in at just 6.5 ounces with a compact length of 2 inches.

The Vivitar model exhibits an auto-focus feature, ensuring quick and accurate focusing on the go. It's compatible with both Canon and Vivitar series, making it a versatile choice for photographers who own multiple cameras or lenses. Please note that the maximum aperture and focal length specifications are not available for this particular item.