Olympus OM-system Teleconverter 1.4X-A (manual focus) for use with 250-350-400mm lenses

This converter fits between the camera and the main lens to increase focal length by 1.4 times.

Deluxe 5-elements in 4 groups construction , with use of special glass , multicoating ,etc assures undiminished image quality . Automatic aperturing for unimpaired  handling convenience . Excellent for close-up effects , because minimum focus remains unchanged. Designed for use with the 180mm F2, 180mm F2.8, 250mm F2 , 300mm F4.5 , 350mm F2.8 and 400mm F6.3 lenses

Specifications :  Teleconverter 1.4x-A.

Optical construction : 5 elements in 4 groups.

Diaphragm operation : Automatic (automatic operation of main lens is retained)

Minimum focus with main lens : Same as when main lens is used by itself.

Focusing : With focusing ring of main lens.

Weight ( OZ ) : 180 grams  (6.3 )

Length ( in )  : 23mm  ( 0,9 )

Maximum diam ( in ) : 63mm ( 2.5 )

Notes :  This teleconverter darkens the aperture value by one stop. Extra care must be taken to avoid camera shake. However in auto mode OM camera’s will give correct exposure automatically . When used with other lenses than those mentioned , image quality may be impaired.