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Press Release:  Revolutionizing Lens Protection

Video of How It Works


Simmod Lens CineStops - an innovative accessory that effectively reduces wear and tear to the lens. The result of extensive research and development, the CineStops are clever end-stoppers that install seamlessly onto SIMple Fit Focus Gears in a few easy steps. CineStops are crafted from hardened plastic for extra durability and reliability.  CineStops are only compatible with our 10mm wide gears.  A 20mm wide version will be available soon!


In The Box:

  • 2 plastic CineStops


Once installed, CineStops restricts the motion of the focussing ring before it causes damage to the lens mechanism. By creating a buffer before a motor exerts too much force, CineStops are a simple, yet effective, safety measure that users of vintage glass can rely on.


Installing CineStops on each lens will give increased peace of mind to DPs, ACs, camera operators and rental houses looking to protect their investment in prized lenses.



The CineStop SIMply gets clicked onto the SIMple Fit Follow Focus Gear.  The walls of the CineStop are designed to grip the aluminum gear, while the 0.8mod geared teeth of the CineStop connect with the aluminum gear.  Removal requires a gentle upward/outward pressure.



    ***Please allow 3-5 business days for engraving***


    Do you have a custom design or logo you'd like on your caps? Send it to with your order number in the subject line.


    Special Instructions:

    • Requests to change lens information and data will not be accepted once an order is submitted for processing and engraving.

    • Please leave notes and instructions for EACH cap in the "Additional Info" Section. 

    • If you're sending us a custom design file, please let us know by selecting the corresponding options or simply indicate that in your instructions.

    • If you do not see your focal length or f.stop in the pull-down menu, DO NOT select the closest number.  Please leave the exact info in the "Additional Info"  Section

    • If you will be submitting a custom design file, please note that on the order.

    • For custom designs, please download this Illustrator TEMPLATE and export as a transparent (no background) PNG file.  Email the design file to with your order number in the subject line.


    Watch Mark Holtze's video to learn more about the SIMMODING process: VINTAGE LENSES FOR VIDEO


    Our Rear EF caps utilize a 1mm thick anodized aluminum top plate, allowing us to custom engrave to your specifications. Functional and stylish.


    Want a matching Engraved Front Cap? Check them out here!


    If you do not see a brand or focal length you are looking for, simply select OTHER and leave us a note.

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