Kenko 1.4x Teleplus MC4 DGX Teleconverter for Sony Alpha Mount

Kenko 1.4x Teleplus Pro 300 DGX teleconverter is designed specifically for prime telephoto lenses of 100mm or higher. The Teleplus Pro 300 extends your lens reach by x1.4 and exposure magnification is increased by 2x. The lens depth of field is reduced by 1/1.4, but the prime minimum focusing distance is maintained. The Gate Array IC technology to maintain signal integrity between the camera and lens. It is chassis with precision quality multi-coated optical glass to improve light transmission and prevent reflections. It also maintains autofocus and metering while reducing light by one EV stop. Full AF operation is possible with lenses having a maximum aperture of F/4 or brighter. The converter is versatile allowing use with telephoto and prime lenses