Mounted between a mirrorless camera and a SLR lens, Speed Booster™ increases maximum aperture by 1 stop (hence its name), increases MTF and makes lens wider by a factor of 0.71x. Optics designed by Caldwell Photographic in the USA (patent pending).
Speed Booster™
Current Stock Level
Current Stock Level
Current Stock Level
Current Stock Level
Current Stock Level
Current Stock Level
Current Stock Level
Contarex Lens to Sony NEX Speed Booster (Chrome)
Optics designed by Caldwell...
Sales price: $449.00
Current Stock Level
Current Stock Level
Contax Yashica Lens to Micro Four Thirds Speed Booster
Optics designed by Caldwell...
Sales price: $399.00
Current Stock Level
Current Stock Level
Current Stock Level
Current Stock Level