Akio Nishizawa

Lens barrel, camera and lens barrel adjustment device

Lens barrel and camera with lens barrel

Rotating indicator pointer type display apparatus

Picture frame switching mechanism

Viewfinder device of display plural visual frames

Camera having film cartridge chamber distinguishable from battery chamber

Variable camera viewfinder corresponding to variable camera aperture

Camera with a frame shift prevention function

Lens barrel, camera system, and lens barrel adjusting device

Camera equipped with a function to prevent displacement of a frame