Converting a Nikon AI lens to AI-S: A Step-by-Step Guide
Nikon is renowned for its high-quality camera lenses, and many photographers appreciate the versatility and performance of older AI (Automatic Indexing) lenses. While these lenses are capable of producing fantastic images, some photographers may find themselves needing to convert an AI lens to AI-S (Automatic Indexing – S) to gain access to the full feature set of their modern Nikon cameras.
Here’s a step-by-step guide on how to convert a Nikon AI lens to AI-S:
Step 1: Gather the Necessary Tools and Materials
You will need a precision screwdriver set, lens spanner wrench, lens mount cap, and possibly a rubber mallet. Additionally, a clean and well-lit workspace is essential to prevent loss of small parts and to ensure the conversion process is smooth and trouble-free.
Step 2: Remove the Mounting Flange
Using a precision screwdriver, carefully remove the screws holding the mounting flange in place. Once these screws are removed, the mounting flange should be easy to detach.
Step 3: Install the AI-S Mounting Ring
Replace the original mounting flange with an AI-S mounting ring. This ring is designed to allow the lens to communicate properly with newer Nikon camera bodies, providing compatibility with features such as matrix metering and aperture priority mode. Use a lens spanner wrench to secure the new mounting ring in place.
Step 4: Adjust the Aperture Indexing Ridge
For some lenses, it may be necessary to adjust the aperture indexing ridge to ensure proper functionality with the AI-S mounting ring. Carefully align and adjust the ridge to guarantee accurate aperture control when mounted on a modern camera body.
Step 5: Test and Calibrate
Once the conversion process is complete, it’s important to test the lens on a compatible Nikon camera body. Check the functionality of the aperture control, autofocus (if applicable), and metering to ensure that the lens performs as expected. You may need to carry out further adjustments to achieve optimal performance.
Converting a Nikon AI lens to AI-S can breathe new life into an older lens, allowing it to be used with confidence on modern Nikon camera bodies. However, it is important to note that this process requires precision and care, and it may void warranties or damage the lens if not performed correctly.
Before attempting this conversion, photographers should consider consulting with a professional camera technician. Additionally, there are third-party services that specialize in lens conversions and modifications, offering peace of mind and ensuring that the lens is converted to AI-S with the utmost care and expertise.
In conclusion, converting a Nikon AI lens to AI-S can expand the compatibility and functionality of older lenses, allowing photographers to continue using these classic optics on today’s advanced camera bodies. With the right tools and a meticulous approach, photographers can successfully convert their AI lenses to AI-S, unlocking a wealth of creative possibilities.
