Introduction
Thank you for choosing the Meike MK-EFTR-071X Auto Focus 0.71X Lens Mount Adapter. This adapter is designed to allow Canon EF series lenses to be used with Canon RF mount cameras, including cinema cameras like the RF S35 and APS-C EOS R, EOS RP, R5, R6, R7, and R10 models. It features a 0.71x focal reduction, which enhances light transmission and effectively increases the lens's aperture by one stop. This manual provides detailed instructions for proper installation, operation, and maintenance of your adapter.
Image: The Meike MK-EFTR-071X Auto Focus 0.71X Lens Mount Adapter, showing its compact design.
Product Features
- Compatibility: Enables the use of Canon EF series lenses on Canon RF mount cameras (e.g., EOS R, RP, R5, R6, R7, R10, C70).
- Focal Reduction: Reduces focal length by 0.71x, effectively increasing the lens's aperture by one stop and enhancing light gathering capabilities.
- Electronic Communication: Supports full electronic communication between the lens and camera, including autofocus, auto aperture control, and anti-shake functions.
- Custom Control Dial: Features a customizable dial for adjusting camera functions such as shutter speed and aperture settings, similar to a Canon RF lens control ring.
- Optical Design: Incorporates 4 groups of 5 optical elements for high-quality image transmission.
- Signal Transmission: Equipped with gold-plated contact pins for reliable and excellent signal transmission.
Package Contents
Please verify that all items are present in the package:
- Meike MK-EFTR-071X Lens Mount Adapter
- Front Lens Cap
- Rear Lens Cap
- Hex Key (for adjustments, if applicable)
Image: The Meike MK-EFTR-071X adapter, front and rear caps, and packaging.
Setup and Installation
- Prepare the Camera: Ensure your camera is turned off before attaching or detaching any lenses or adapters.
- Attach EF Lens to Adapter:
- Align the red dot on your Canon EF lens with the red dot on the EF mount side of the Meike adapter.
- Insert the lens into the adapter and rotate it clockwise until it clicks into place.
Image: The EF mount side of the adapter, where the EF lens attaches.
- Attach Adapter with Lens to RF Camera:
- Align the red dot on the RF mount side of the Meike adapter with the red dot on your Canon RF camera body.
- Insert the adapter (with the EF lens attached) into the camera body and rotate it clockwise until it clicks into place.
Image: The RF mount side of the adapter, showing the electronic contacts for communication with the camera.
- Detaching: To detach the lens, press the lens release button on the adapter and rotate the lens counter-clockwise. To detach the adapter from the camera, press the camera's lens release button and rotate the adapter counter-clockwise.
Image: The Meike MK-EFTR-071X adapter mounted on a Canon RF camera with an EF lens attached.
Operating Instructions
Once the adapter and lens are securely mounted, you can operate your camera as usual, benefiting from the adapter's features:
- Autofocus: The adapter supports the autofocus functions of your EF lens on the RF camera body. Ensure your camera's autofocus settings are configured as desired.
- Auto Aperture: Aperture control will function automatically through the camera body, just as with a native RF lens.
- Image Stabilization: If your EF lens features optical image stabilization (IS), this function will be supported through the adapter.
- Custom Control Dial: The adapter features a control dial that can be customized via your camera's menu to control various settings like shutter speed, aperture, or ISO, mimicking the functionality of a Canon RF control ring. Refer to your camera's manual for customizing control ring functions.
Image: Side view of the adapter, highlighting the custom control dial.
Maintenance
To ensure the longevity and optimal performance of your Meike MK-EFTR-071X adapter, follow these maintenance guidelines:
- Cleaning: Use a soft, lint-free cloth to clean the exterior of the adapter. For optical elements, use a lens cleaning solution and a microfiber cloth. Avoid touching the glass elements directly with your fingers.
- Contacts: Keep the electronic contacts on both sides of the adapter clean. Use a clean, dry cotton swab or a specialized contact cleaner if necessary. Avoid abrasive materials.
- Storage: When not in use, store the adapter with both front and rear caps attached in a dry, dust-free environment.
- USB Port: The adapter features a USB port for potential firmware updates. Keep this port clean and covered when not in use.
Image: The EF mount side of the adapter, showing the electronic contacts and the USB port for firmware updates.
Troubleshooting
If you encounter issues with your Meike MK-EFTR-071X adapter, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lens not recognized / No electronic communication | Dirty or damaged electronic contacts; improper mounting. | Clean the electronic contacts on both the lens and adapter. Ensure the lens and adapter are securely mounted with an audible click. Turn the camera off and on again. |
| Autofocus is slow or inaccurate | Low light conditions; lens compatibility issues; camera settings. | Ensure adequate lighting. Check your camera's autofocus mode and settings. Some older EF lenses may perform differently. Update adapter firmware if available. |
| Vignetting or image quality issues | Incompatible lens (e.g., some EF-S lenses); physical interference; optical limitations. | While the adapter is designed for EF lenses, some EF-S lenses (even if physically mountable) might cause vignetting or contact with the adapter's glass elements, especially at wider focal lengths. Test with different lenses. |
| Control dial not functioning | Not configured in camera settings; firmware issue. | Check your camera's custom function settings to ensure the control dial is assigned to a function. Ensure the adapter's firmware is up to date. |
Specifications
| Brand | MEKE |
| Model | MK-EFTR-071X |
| Lens Mount | Canon EF |
| Camera Mount | Canon RF |
| Focal Reduction | 0.71x |
| Optical Elements | 4 groups, 5 elements |
| Dimensions (L x W x H) | Approx. 10.8 x 8.8 x 6.5 cm (Package) |
| Weight | Approx. 284 grams (Package) |
| Manufacturer | HK Meike |
Warranty and Support
Information regarding specific warranty terms, spare parts availability, and guaranteed software updates for the Meike MK-EFTR-071X adapter is not available in the provided product data. For detailed warranty information or technical support, please refer to the official Meike website or contact your retailer.