Mechanism inside a lens which uses interlocking metal leaves, or ‘blades’, to produce a variable-sized aperture within the lens. This is used to control the amount of light passing through and hence the exposure.
The digital photography A-Z
The digital photography A-Z
Mechanism inside a lens which uses interlocking metal leaves, or ‘blades’, to produce a variable-sized aperture within the lens. This is used to control the amount of light passing through and hence the exposure.