1. Introduction
This manual provides essential information for the safe and effective use of your OM SYSTEM Olympus M.Zuiko Digital ED 12-40mm f/2.8 PRO interchangeable lens. This high-performance zoom lens is designed for Micro Four Thirds cameras, offering a versatile 24-80mm equivalent focal length range (35mm format) with a constant f/2.8 maximum aperture. Its robust construction includes splash-proof, dust-proof, and freeze-proof capabilities, making it suitable for various demanding photographic environments.
2. Package Contents
Verify that all items listed below are included in your product package:
- OM SYSTEM Olympus M.Zuiko Digital ED 12-40mm 1:2.8 PRO lens
- Lens Hood (LH-66)
- Lens Case (LSC-0918)
- Lens Cap (LC-62D)
- Rear Lens Cap (LR-2)
- Warranty Card (Note: This is an international version; warranty terms may vary by region.)
3. Product Overview
The M.Zuiko Digital ED 12-40mm f/2.8 PRO lens is engineered for high optical performance and durability. Key features include:
- Constant f/2.8 Aperture: Provides excellent low-light performance and shallow depth of field across the entire zoom range.
- Weather-Sealed Construction: Dustproof, splash-proof, and freeze-proof design ensures reliability in challenging conditions.
- Manual Focus Clutch Mechanism: Allows for quick switching between auto and manual focus modes with a tactile distance scale.
- L-Fn Button: A customizable function button for quick access to frequently used settings when paired with compatible Olympus camera bodies.
- High-Grade Optical Components: Utilizes Dual Aspherical, High Refractive, and ED lens elements for superior image quality.
3.1 Lens Components
4. Setup
4.1 Attaching the Lens
- Remove the rear lens cap (LR-2) and the camera body cap.
- Align the white mounting index mark on the lens barrel with the white mounting index mark on the camera body.
- Insert the lens into the camera mount and rotate it clockwise until it clicks into place. Do not force the lens.
4.2 Detaching the Lens
- While pressing the lens release button on the camera body, rotate the lens counter-clockwise until it stops.
- Carefully remove the lens from the camera body.
- Attach the rear lens cap (LR-2) to the lens and the body cap to the camera to protect them from dust and damage.
4.3 Attaching the Lens Hood (LH-66)
Align the red dot on the lens hood with the red dot on the front of the lens. Rotate the hood clockwise until it clicks into place. To reverse the hood for storage, align the red dots and rotate counter-clockwise to remove, then reattach in reverse orientation.
5. Operating the Lens
5.1 Zooming
Rotate the zoom ring to adjust the focal length between 12mm (wide-angle) and 40mm (telephoto). The lens maintains a constant f/2.8 aperture throughout this range.
5.2 Focusing (Manual Focus Clutch)
The lens features a manual focus clutch mechanism. To switch to manual focus, pull the focus ring back towards the camera body. This will reveal a distance scale and engage manual focus. Push the focus ring forward to return to autofocus mode.
5.3 L-Fn (Lens Function) Button
The L-Fn button on the lens barrel can be customized via your compatible Olympus camera's menu system. Refer to your camera's instruction manual for details on assigning functions to this button.
6. Care and Maintenance
- Cleaning: Use a soft, lint-free cloth to clean the lens barrel. For lens elements, use a lens brush to remove dust, then gently wipe with a lens cleaning cloth and solution.
- Storage: When not in use, attach the front and rear lens caps and store the lens in its case in a cool, dry place away from direct sunlight.
- Weather Protection: While the lens is dustproof, splash-proof, and freeze-proof, avoid prolonged exposure to extreme conditions. Wipe off any moisture immediately.
- Avoid Impact: Protect the lens from drops and impacts, which can damage internal optical elements or mechanical parts.
7. Troubleshooting
If you encounter issues with your lens, consider the following general troubleshooting steps:
- Lens Not Attaching/Detaching: Ensure the mounting marks are aligned correctly and the lens release button is fully pressed when detaching. Do not force.
- Autofocus Issues: Check that the manual focus clutch is pushed forward to engage autofocus. Ensure your camera's autofocus settings are appropriate for your shooting conditions. Clean the lens contacts on both the lens and camera body.
- Image Quality Concerns: Ensure lens elements are clean and free from smudges. Check camera settings (ISO, aperture, shutter speed) for optimal exposure.
- Lens Not Recognized by Camera: Ensure the lens is securely mounted. Turn the camera off and on again. Clean the lens contacts.
For persistent issues, consult your camera's manual or contact Olympus customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | EZ-M1240 |
| Focal Length | 12-40mm (35mm equivalent: 24-80mm) |
| Maximum Aperture | f/2.8 (constant) |
| Lens Type | Standard Zoom |
| Compatible Mountings | Micro Four Thirds |
| Construction | Dustproof, Splash-proof, Freeze-proof |
| Product Dimensions | 3.31 x 2.75 x 2.75 inches |
| Item Weight | 13.5 ounces |
| Manufacturer | Olympus |
9. Warranty and Support
This product is an international version of the OM SYSTEM Olympus M.Zuiko Digital ED 12-40mm f/2.8 PRO lens. While a Warranty Card is included in the box, please be aware that international versions may not carry a manufacturer's warranty valid in all regions, particularly the United States. It is recommended to check with your retailer or local Olympus/OM SYSTEM service center regarding specific warranty coverage in your country of purchase or residence.
For technical support, service, or further inquiries, please visit the official OM SYSTEM website or contact their customer service department in your region.
Online Resources: Visit the Olympus Store on Amazon
