How to Use the NiSi JetMag Pro MAXMAG Back Cap
By NiSi Filters Australia | Published: 2026-10-30
Category: How-to Guides
Learn how to attach, remove, and store the NiSi JetMag Pro MAXMAG Magnetic Back Cap to keep your filters safe, clean, and ready to shoot.
Quick Answer
The NiSi JetMag Pro MAXMAG Magnetic Back Cap attaches magnetically to the rear of your MAXMAG filters, giving you instant protection and easy storage. Follow the steps below to use it correctly and avoid common mistakes.
Why Use a Magnetic Back Cap?
When your JetMag Pro MAXMAG filters are not mounted on a lens, the rear glass is exposed to scratches, dust, and moisture. The magnetic back cap provides a secure, tool-free cover that snaps on in seconds, so you can protect your filters without fumbling with threaded caps.
The cap's magnetic attachment is designed for speed and convenience, but it also means you need to handle it with care to avoid dropping the filter or the cap itself. A little attention during attachment and removal goes a long way.
Know Your Cap's Limits
The back cap is specifically made for JetMag Pro MAXMAG filters. It won't fit other filter systems or standard threaded filters, so always check compatibility before purchasing or using it. Also, while the aluminum construction is durable, it's not a substitute for a padded case when traveling—use the cap for everyday protection, not as a crash-proof solution.
How to Attach and Remove the Back Cap
- Clean the filter rear glass: Before attaching the cap, ensure the rear glass of the MAXMAG filter is free of dust and smudges. Use a blower or a microfiber cloth if needed. A clean surface prevents debris from being trapped between the cap and glass, which could cause scratches.
- Align the cap with the filter rear: Hold the back cap in one hand and the filter in the other. Align the cap's magnetic surface with the rear of the filter, ensuring it is centered and flush. Misalignment can cause the magnet to pull unevenly, making the cap feel loose or difficult to remove.
- Let the magnet snap into place: Bring the cap close to the filter and let the magnet pull it into position. You should feel a firm click or snap. Do not force it—if it doesn't align, reposition and try again. Forcing the cap can chip the filter edge or damage the magnetic coating.
- Check the cap is secure: Gently tug the cap to confirm it is firmly attached. If it feels loose, remove and reattach, ensuring no debris is blocking the magnetic contact. A secure fit is essential to prevent the cap from falling off during storage or transport.
- Remove the cap when ready to shoot: When you need to mount the filter, hold the cap by its edges and pull straight away from the filter. Avoid twisting, which can stress the magnetic connection. Pulling straight reduces wear on the magnet and keeps the cap in good condition for longer.
Product Facts
- NiSi JetMag Pro MAXMAG Magnetic Back Cap: Magnetic Attachment for Secure Fit – Quickly and securely attaches to the rear of JetMag Pro MAXMAG filters, providing instant protection when filters are not mounted on a lens. You can snap the cap on and off in seconds, so protecting your filter becomes a natural part of your workflow.
NiSi JetMag Pro MAXMAG Magnetic Back Cap - NiSi JetMag Pro MAXMAG Magnetic Back Cap: Durable Metal Construction – Crafted from high-quality aluminum for long-lasting protection against impacts, dust, and moisture. The metal build adds a layer of toughness that plastic caps can't match, keeping your filter safe in everyday handling.
- NiSi JetMag Pro MAXMAG Magnetic Back Cap: Protects MAXMAG Filters – Shields the rear glass of MAXMAG filters from scratches, dirt, and environmental elements. Keeping the rear glass clean and scratch-free maintains image quality and extends the life of your filters.
