Introduction
The JJC LC-GR4 Metal Lens Cap is specifically designed to protect the lens of your Ricoh GR IV, GR IV HDF, and GR IV Monochrome cameras. Crafted from premium aluminum alloy with a soft EVA lining, it offers robust protection against scratches, moisture, and dust when your lens is not in use. This manual provides essential information for the proper setup, operation, and maintenance of your lens cap.

Setup
- Initial Application: Before the first use, place the lens cap onto your camera lens and allow it to set for 12 hours. This ensures proper adhesion and a secure fit.
- Attachment: To attach the cap, simply press it directly onto the lens. There is no need to screw it on. Ensure the lens ring is not removed prior to attachment.
- Removal: To remove the cap, pull it directly off the lens.
Operating the Lens Cap
The JJC LC-GR4 lens cap is designed for straightforward use, providing immediate protection for your camera's lens.
- Protection: When not actively using your camera, keep the lens cap attached to shield the lens from physical damage, dust, and moisture.
- Quick Access: The direct attachment and removal mechanism allows for quick access to your camera's lens when you are ready to shoot.
- Compatibility: This lens cap is compatible with the JJC F-WMCUVG3 Filter (sold separately), allowing for continued lens protection even with a filter installed.


Maintenance
To ensure the longevity and effectiveness of your JJC LC-GR4 Metal Lens Cap, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the exterior of the lens cap. For the interior EVA lining, gently brush away any dust or debris. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the lens cap in a clean, dry environment when not in use. Avoid extreme temperatures or humidity.
- Material Care: The cap is made of premium aluminum alloy, which is lightweight and durable. The soft EVA lining offers scratch-resistant protection for your lens. Regular inspection of the EVA lining for wear and tear is recommended.

Troubleshooting
- Cap Not Staying On: If the lens cap does not securely attach, ensure the lens surface is clean and free of debris. If it's the first time using it, ensure you have followed the initial 12-hour setting period as described in the Setup section.
- Dust Inside Cap: Regularly clean the soft EVA lining to prevent dust accumulation that could transfer to your lens.
Specifications
| Feature | Detail |
|---|---|
| Brand Name | JJC |
| Model Number | LC-GR4 |
| Compatible for | Ricoh GR IV HDF / GR IV Monochrome / GR4 |
| Material | Premium Aluminum Alloy, Soft EVA Lining |
| Dimensions | Φ60.2 x 11.5mm |
| Package | Yes |
| Origin | Mainland China |

User Tips
- For optimal initial adhesion, ensure the lens cap is placed on the lens and left undisturbed for 12 hours before active use.
- Always attach and remove the cap by pulling it directly on or off, avoiding any twisting motion.
- There is no need to remove the lens ring from your camera when using this cap.
Warranty and Support
Warranty Period
JJC products are covered by a one-year limited warranty starting from the original date of purchase. Please retain your original proof of purchase (e.g., order confirmation, invoice) clearly showing the purchase date and order number, as it will be required for verification when claiming warranty service.
What This Warranty Does Not Cover
This warranty does not cover damages or failures resulting from:
- Failure to follow the “Important Safety Instructions” and “Operating Procedures” outlined in the user manual.
- Misuse, accident, drop, impact, crush, liquid contact, or other physical damage not attributable to manufacturing defects.
- Any attempt at unauthorized disassembly, modification, or repair by personnel not authorized by JJC.
- Damage caused by force majeure events such as fire, flood, lightning, earthquake, etc.
Warranty Service
For products covered under warranty, JJC will, at its discretion, repair or replace the product based on the nature of the fault. The repaired or replaced product/component will be covered for the remainder of the original product's warranty period.
Important Safety Notice
Please do not place this item at a high place to avoid falling.
Contact Us
For efficient service, we recommend first submitting your after-sales request through the customer service channel of your original purchase platform. Alternatively, you may contact us via the official JJC service email: service@jjc.cc.
Manufacturer: JJC Photography Equipment Co., Ltd.
Office TEL: +86 755 82359938
Website: www.jjc.cc
Address: RM1305 East Block, Tian'an High-Tech Plaza Phase II, Tian'an Cyber Park, Futian District, Shenzhen, Guangdong, China
For more detailed information, you can refer to the User Manual (PDF).