Vivitar Automatic Tele Converter 3x-8 for M42 brand_Kawauso-Shoten C is a surprisingly heavy

C is a surprisingly heavy short telephoto lens for the Nikon S rangefinder mount

not the "BC" version with a corner-darkening mask

lightstand

you may have difficulty mounting it to this bellows: the rear mount doesn't swivel and the rear standard support may get in the way

Vivitar Automatic Tele Converter 3x-8 for M42 brand_Kawauso-Shoten C is a surprisingly heavyMost teleconverters only double your focal length; this one triples it. 3x is 50% better than 2x! Everyone will be impressed with your new teleconverter and you will become famous as the person with the most teleconverted lens. We cant guarantee that any of that is true, but what if it was? Wouldnt that be something? This teleconverter works on M42 lenses and bodies.