Revive Old Lenses: Grinding the Aperture Ring

Revive Old Lenses: Grinding the Aperture Ring

Table of Contents

1. Introduction
2. The Problem with Mounting Older Lenses on Newer Cameras
3. The Solution: Grinding the Aperture Ring
4. Tools Needed for the Process
5. Step-by-Step Guide to Grinding the Aperture Ring
6. Measuring and Adjusting the Ring
7. Lubricating and Reassembling the Lens
8. Testing the Lens on the Camera
9. Tips and Precautions
10. Conclusion

Grinding the Aperture Ring: A Step-by-Step Guide to Mounting Older Lenses on Newer Cameras

Introduction

The Problem with Mounting Older Lenses on Newer Cameras

If You have ever tried to mount an older lens on a newer digital SLR or DSLR camera, you may have encountered a common problem. The newer cameras use a small tab to communicate the aperture information to the camera, but the older lenses have a lip all the way around the lens mount that prevents the tab from engaging. This can potentially damage the tab and render the lens unusable on the newer bodies.

The Solution: Grinding the Aperture Ring

Fortunately, there is a solution to this problem. By grinding down a portion of the aperture ring, you can modify the lens to work with the newer cameras. This process requires some precision work and the right tools, but it can be done at home with a little patience and care.

Tools Needed for the Process

Before you begin grinding the aperture ring, make sure you have the following tools:

1. Screwdriver with a wide head
2. Fine files or sandpaper
3. Synthetic lubricant, like Super Lube
4. Q-tips or small brushes for applying lubricant
5. Calipers or a ruler for measuring

Step-by-Step Guide to Grinding the Aperture Ring

1. Remove the rear screws of the lens mount carefully, as they may be held in place with thread lock. Use a screwdriver that fits the screw slots snugly to avoid damaging the screws.
2. Remove the lens mount, being cautious not to touch the inner parts that control the aperture. Set it aside in a safe place.
3. Slide off the aperture ring, noting the notches for the clicks and the spring mechanism. Keep these parts together as you will need them for reassembly.
4. Use a file or sandpaper to grind down the aperture ring, focusing on the section just before the f/11 marking. This is where most F2 lenses begin the notch that engages with the camera's tab.
5. Pay Attention to the lip on the ring and try to grind it down evenly, using the lens mount or a ruler as a guide for evenness.
6. Smooth out any rough edges with finer files or sandpaper, gradually working your way to a smoother finish.
7. Clean the ring thoroughly to remove any metal shavings.
8. Apply a small amount of lubricant to the ring, paying attention to the click ridges and any other moving parts.
9. Reassemble the lens, ensuring the aperture ring aligns with the screw hole for smooth operation.
10. Tighten the screws securely, being careful not to strip them.
11. Test the lens on the camera, adjusting the aperture to ensure it is reading properly.

Measuring and Adjusting the Ring

To ensure accuracy while grinding the aperture ring, you can use calipers to measure the amount to be removed. Typically, it is recommended to grind it down by about 1-1.25 millimeters. However, visually aligning it with the lens mount or using the touch test can also yield satisfactory results.

Lubricating and Reassembling the Lens

After grinding the aperture ring, it is crucial to clean off any metal shavings before applying lubricant. Synthetic lubricants like Super Lube work well for smooth operation. Apply a small amount to the click ridges and other moving parts, ensuring even distribution.

Testing the Lens on the Camera

Once the lens is reassembled, it's time to test it on the camera. Adjust the aperture and confirm that the camera correctly reads the changes. If everything works smoothly, congratulations! You have successfully modified your lens to mount on a newer camera.

Tips and Precautions

• Take your time and be patient throughout the process. Rushing can lead to mistakes and damage to the lens or camera.
• Use appropriate safety measures when grinding down the aperture ring to protect your eyes and prevent accidental damage.
• Make sure to Read the lens manufacturer's guidelines and consult online resources or tutorials to ensure compatibility.
• It's advisable to test the modified lens in various shooting conditions to ensure consistent functionality.

Conclusion

Grinding the aperture ring is a viable solution for mounting older lenses on newer cameras. With the right tools and careful execution, you can modify your lens to work seamlessly with modern camera bodies. This process allows you to breathe new life into older lenses and take AdVantage of their unique characteristics on your photography Journey. Happy shooting!

Highlights:

1. Learn how to modify older lenses to mount on newer cameras.
2. Step-by-step guide to grinding the aperture ring.
3. Tools needed for the process and precautions to be taken.
4. Test and ensure the modified lens works seamlessly on the camera.
5. Bring new life to old lenses and capture unique photographs.

FAQ:

Q: Is it safe to grind the aperture ring on a lens? A: When done with proper care and precision, grinding the aperture ring can be a safe and effective method to modify older lenses. However, it is advised to follow the guidelines recommended by the lens manufacturer and exercise caution throughout the process.

Q: Can I use any lubricant for the lens reassembly? A: It is recommended to use a synthetic lubricant, like Super Lube, for smooth operation. These lubricants are designed specifically for camera mechanisms and ensure optimum performance.

Q: Are there any risks involved in modifying a lens? A: Modifying a lens carries some risks if not executed correctly. Mishandling or improper grinding can damage the lens or render it unusable. It is essential to take your time, follow guidelines, and seek assistance if unsure about any step in the process.

Q: Can I modify any lens to mount on newer cameras? A: Not all lenses can be easily modified to mount on newer cameras. The compatibility between the lens and camera mount plays a significant role in determining if modification is possible. It is best to research and consult reliable sources to ensure compatibility before attempting any modifications.