Vivitar Automatic Tele Converter 2X-3 For Nikon and Nikkormat Cameras (Pre-Owned)

The Vivitar Automatic Tele Converter 2X-3 was a popular accessory for Nikon and Nikkormat cameras in the film photography era.Here’s some information about it:

1. Functionality: This teleconverter was designed to increase the focal length of Nikon lenses by a factor of 2x. For example, a 50mm lens would effectively become a 100mm lens when mounted with this teleconverter.

2. Compatibility: It was compatible with Nikon F-mount lenses and could be used with both Nikon SLR cameras and Nikkormat cameras, which were also part of Nikon's SLR lineup.

3. Features: The "Automatic" designation typically meant that it allowed for automatic exposure metering through the camera body, maintaining electronic communication between the camera and the lens.

4. Optical Quality: Teleconverters generally reduce the amount of light reaching the camera sensor (usually by 2 stops with a 2x converter), and they can also impact image quality to some extent, often softening the image slightly and potentially introducing some aberrations.

5. Usage: It was useful for photographers needing additional reach without carrying additional long lenses, such as wildlife photographers or sports photographers.

6. Manual Control: Despite being "Automatic," these teleconverters often required manual focus adjustment and might have limited compatibility with certain autofocus functions depending on the specific lens and camera combination.