By employing a press, a variety of shapes can be cut out and bent from a single plate of metal: from the parts that connect the lens and camera drives with each other to the vital sectors that guide light from the camera lens to the sensor. More than 1600 different gear parts are manufactured in-house at SIGMA in order to get the best quality for our products. This represents the pride we invest in our manufacturing.
photo : Motonobu Okada
lens : SIGMA APO 70-200mm F2.8 EX DG OS HSM
SIGMA Aizu factory, Plastic Forming Department, Press Manufacturing Division, Assistant Manager
One of the most important parts of the diaphragm unit: the sector. With a length of 20-30mm and a thickness of only 40μm, this tiny piece fulfills the same important function as the pupil in a human eye.