| 摘要 |
To provide a lens barrel having an optical filter at a low cost, a lens barrel is provided and has: an aperture between two lenses held in the lens barrel; and at least one optical filter disposed to rearward of one of the two lenses, wherein the one of the two lenses is situated closer to the camera body than the other of the two lenses, and the at least one optical filter blocks or passes light depending on a wavelength of the light. |
