Electronics / Camera Lenses
Disassembly Guide for Sigma 24-70mm F2.8 EX DG Macro Lens
A step-by-step disassembly guide for the Sigma 24-70mm F2.8 EX DG Macro lens. Learn how to access the zoom bearing, remove the circuit board, and safely disassemble the lens components.
Quick answers from the manual
Quick answer
- This guide provides instructions on how to disassemble the Sigma 24-70mm F2.8 EX DG Macro lens to access the zoom bearing. p. 1, 2
Key actions
- Remove the lens from the camera. p. 3
- Unscrew the top part and detach it. p. 4
- Unjoin cables and remove the circuit board. p. 4
- Remove the zoom rubber to access screws. p. 5
Problems and fixes
Autofocus bearings stuck
Disassemble the lens to reach the zoom bearing.
p. 2Show 1 more answers Show less
Where to find it in the PDF
- Introduction and Tools p. 2
- Disassembly Steps p. 3, 4, 5, 6
Table of contents
Manual images
Click an image to enlargeQuick Guide: Disassembly Overview
This guide provides instructions for disassembling the Sigma 24-70mm F2.8 EX DG Macro lens, specifically to reach the zoom bearing. Please note that camera lenses contain delicate and intricate components. Proceed with caution and work slowly. You perform this disassembly at your own risk.
Tools Required
- Phillips screwdriver
Safety Precautions
- Camera lenses are delicate. Handle all internal components with extreme care.
- Avoid touching sensitive electronic components.
- Cables are fragile and can be easily torn.
Disassembly Procedure
- Preparation: Remove the lens from the camera body before starting.
- Top Assembly: Unscrew the top part of the lens and detach it.
- Electronics: Carefully unjoin the cables. Unfasten the screws securing the circuit board and separate it from the lens assembly.
- Accessing Internal Parts: Remove the zoom rubber grip to reveal the underlying screws.
- Reaching the Zoom Bearing: Continue unscrewing and removing parts until you reach the zoom bearing. The zoom bearing can be removed by unscrewing its specific screws.
- Inspection: Identify any broken parts. If components are damaged, they may require replacement.
Reassembly
To reassemble your device, follow the disassembly instructions in reverse order.
Practical help
Common problems
Autofocus bearings stuck
Disassemble the lens to access the zoom bearing and inspect for broken or jammed parts.
Before use
- Ensure you have a Phillips screwdriver
- Work in a clean, well-lit area
- Handle delicate electronic components with care
- Remove the lens from the camera before starting
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Images and diagrams
- Images illustrate the location of screws, circuit board connections, and the zoom rubber removal process.
Model compatibility
- This guide is specific to the Sigma 24-70mm F2.8 EX DG Macro lens.
Manual page author
Emily Carter
User documentation editor