Sony a-2078-434-c Iris Module ATS-27C-T-F1

Product Description

The SONY a-2078-434-c is an iris module assembly, also referenced as ATS-27C-T-F1, designed for use in Sony imaging and optical systems. The iris assembly controls the aperture of a lens, regulating light transmission to the image sensor. This component is a factory-replacement part sourced through Sony's parts and accessories program. It is associated with the SEL55F18Z lens platform and is installed by qualified camera and optical equipment technicians during depot-level repair or field servicing of Sony imaging equipment.

This iris module is intended for use in Sony consumer electronics imaging assemblies. It is suited to repair scenarios where the aperture mechanism has failed, become sticky, or is producing inconsistent exposure control. Installation is typically performed during a bench repair of a Sony E-mount lens assembly. Only technicians familiar with precision optical disassembly and reassembly procedures should attempt this replacement.

Key Features

• OEM Sony iris module assembly for precision aperture control
• Referenced under alternate designation ATS-27C-T-F1 for cross-referencing during parts lookup
• Associated with the SEL55F18Z lens platform
• Direct factory-replacement part sourced through Sony parts and accessories supply chain
• Restores proper aperture function in affected lens assemblies

Compatibility

This part is associated with the Sony SEL55F18Z lens platform as indicated in the product reference data. Confirm compatibility against the full Sony parts documentation for the specific lens serial range before ordering.

Installation Notes

Installation of an iris module requires full disassembly of the lens barrel and should only be performed by technicians trained in precision optical repair. Power down and disconnect all associated camera body connections before beginning service. Use appropriate anti-static precautions and avoid contact with optical elements during the repair process. Reassembly must maintain correct alignment of the aperture blades to ensure proper exposure control function.

Technical Specifications

• Alternate Part Reference: ATS-27C-T-F1
• Associated Lens Platform: SEL55F18Z
• Part Category: Iris Module Assembly

Standard Information

• Brand: SONY
• Manufacturer Part Number: a-2078-434-c