Proud Sponsors of


Canadian Society of Cinematographers

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At SIMMOD LENS we specialize in modifying vintage photo lenses for use on new mirrorless and motion picture cameras.  To date, we have modded thousands of lenses for DP's the world over.  

A true SIMMODDED lens includes an 80mm Outer Diameter SimRing, a seamless 32 pitch (0.8 module) aluminum SIMple Fit Follow Focus Gear, a de-clicked and dampened aperture ring, and a professionally installed EF Conversion using our Pro SIMMOUNT system.  To top it all off, we install a beautiful custom engraved Alumicolor™ front cap.

To learn more about the Simmoding process, check out Mark Holtze' and Justin Phillip's video reviews.

*We do not provide quotes via email.  Please use our Estimator tool below for pricing*



We're proud to work with some of the world's most trusted names in the industry to offer you the complete Simmodding experience.  All Authorized Professional Network members use genuine Simmod Parts and are experts in the Simmodding process.  From Toronto to Amsterdam, Western Australia, to New Jersey, we've got you covered.  Please contact one of our Authorized Professional members below to discuss how they can help Simmod your lenses.

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The companies listed above are not affiliates, partners, or joint ventures of Simmod Lens Inc. / 2725092 Ontario Inc.  All companies listed above operate as their own entity and has sole discretion to dictate their own pricing, turnaround time, and method of operation.



As an award winning cinematographer, Ron Sim csc is no stranger to the world of cinematography.  His passion for perfection and dedication to the craft goes well beyond the bright lights and big sets of commercial productions.  Much like cinematography, creating the SIMMOD System ™ began as a hobby while fidgeting in his man-cave in between shoot days.  It was also a way for him to stay out of his wife's path while she studies to become a doctor.  As an avid collector of vintage lenses, there was no shortage of lenses to choose from when sourcing the right glass to learn on.  Through the years, what started as an experiment to convert an old Leica still lens for cinema use became a sustainable passion.  To date, Ron has converted vintage lenses for aspiring and veteran DP's the world over.

We currently operate all lens modding operations out of our United States office located in downtown Detroit, Michigan.  All product orders are  fullfilled from our new office in Windsor, Ontario Canada.

If you have any questions about the SIMMOD System™ or need consultation about turning your vintage collection into cine lenses, give Ron a call or shoot him a message.

"Don't shoot what it looks like.  Shoot what it feels like."  -David Alan Harvey





For immediate technical support, please email

We are currently experiencing a very high volume of phone calls, emails, and messages.  We sincerely apologize for the delay in replying.  We are trying our best to reply as soon as possible.

United States Operations

269 Walker St.

Suite 916

Detroit, MI 48207

Canada Operations

149 Tecumseh Rd W

Windsor, ON N8X 1E8

Please do not ship to our Canadian office


9am to 5pm Eastern Standard Time

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*We do not provide quotes via email.  Please use our Estimator tool for specific pricing.  Messages requesting a quote will not receive a reply.  

**When inquiring about order in the queue, please include the order number in your message.   

***We are not able to lower the declared value of an order for an export declaration.  Doing so is a fraudulent act.  You will not receive a reply if your message is pertaining to this request.

Thank you!