Kenko Teleplus "DG" 1.5x AF Teleconverter for the Maxxum & Sony Alpha Mount.

KENKO AF 1.5X super high quality Teleplus converter has also genuine Gate Array IC and compact, light weight and easy handling. Full AF linkage with teleplus is possible with camera lenses with open aperture of F4.5 or brighter (Manual focusing is required when using lenses with smaller open f-stop value than those given above).

DG Series
New DG Series have upgraded "Gated-Array" circuitry to work better with the digital SLR's and some of the the new digital only lenses. They still work the same with film SLR Cameras and lenses as well