To prevent paint from infiltrating to an opposite surface in the case of painting a shutter blade by forming the blade of black color material and painting at least either surface so that the black color material may be exposed all over the periphery of an end face.

Both surfaces of the light shielding blade are painted 11a and 11b, and carbon fiberglass reinforced composite material (CFRP) is exposed at both ends. The painting 11a on the lens side surface is of high reflection painting, and the painting 11b on the film side surface is of low reflection painting. Since the figure indicates only cross section, the indicated exposure surface of the CFRP 40 is only limited to both ends, but the CFRP 40 is exposed all over the periphery of the end face. Other light shielding blade is processed in the same way. Since the CFRP 40 itself has low reflectance, the exposure part of the CFRP 40 is applied to a slit edge as it is. Then, the exposure part of the CFRP 40 is the end face of the light shielding blade, so that it does not influence a TTL automatic light control device. Thus, masking is not required and working efficiency is improved.