It doubles the focal length of the lens, allowing for a maximum aperture of 2x. From Vivitar display cabinet.
Vivitar Automatic Tele Converter Camera Lens 2X-4 FL-FD Made in Japan
[ MINT in Case ] BRONICA GS-1 TELE-CONVERTER G 2X for ZENZANON PG from JAPAN
FOCAL MC 2X TELE CONVERTER FOR MINOLTA 35MM FILM CAMERA MD MOUNT 20-06-76
Vivitar Tele-Zoom 90-230mm f/4.5 manual focus telephoto zoom lens for Canon FL
Vintage Vivitar Tele 500mm f/6.3 Manual Focus Telephoto Lens MPN 69475 w/ Case
Rust Converter For Metal, Rust Converter, 300g Weatherproof Rust Converter Paint For Metal, Water-Based Metallic Paint with Brush (Gray)
![[ MINT in Case ] BRONICA GS-1 TELE-CONVERTER G 2X for ZENZANON PG from JAPAN](https://images.buynet.work/thumb.php?i=385561081&s=240)
