ASTRODESIGN,Inc.

Carl Zeiss AG

COSINA CO., Ltd.

Eastman Kodak Company

Fuji Photo Film Co., Ltd.

Jos. Schneider Optische Werke GmbH

Kenko Tokina Co., Ltd.

Komamura Corporation

Leica camera AG

Olympus Imaging Corp

Panasonic Corporation

Sanyo Electric Co., Ltd.

Sigma Corporation

Tamron Co., Ltd.