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Image quality is what matters most at Simmod Lens.  Our philosophy is SIMple:  provide the highest light transmission possible while adding protection and peace of mind.  To that end, we’ve tested and combined many features and essentials to achieve what we set out to do.  With our new UV Cut filters, 99.2% of light is transmitted while offering users peace of mind by adding an outer layer of glass for protection—while never compromises on image quality.


To achieve superior 99.2% light transmission, Simmod uses highly-polished Schott glass, multi-coating, and additional advanced elements that improve the filter’s light transmission. A scratch-resistant coating minimizes scratching of the glass and helps assure that water, oil, dust, and fingerprints are removed with a gentle wipe. The durable brass filter ring is designed to screw on and off effortlessly, and it’s thin to prevent vignetting when used with wide-angle lenses.


99.2% Light Transmission

Protecting your lens doesn't mean you have to lose optical quality—especially when shooting on modern and vintage lenses.  By using highly-polished Schott glass and advanced coatings, Simmod can offer a 99.2% transmission rate, which is the highest possible transmission rate for glass.  Simmod glass that's polished to perfection is essential to achieve a high level of light transmission. The Schott glass in this Simmod filter is highly-polished for flatness that ensures superior optical clarity.


Resistance Coating

The layers of advanced resistance coating on the filter are designed to resist moderate scratches, and allow you to easily clean your filter. Simmod UV Cut filters contain 7 layers of nano-coating on each side.  That’s a combined total of 14 layers of nano-coating.  Water beads up and rolls off your filter, and oil and fingerprints can come off with a gentle wipe. Dust and debris won't adhere to the filter and can be removed with a puff of air.



Simmod UV Cut Filters are layered with Multi-Coating to enhance light transmission to the demanding level set for all Simmod filters. Simmod filters are multi-coated with 16 layers of coating on each side.  That’s a combined total of 32 layers of protective and enhancement coating.  Multi-Coating reduces unwanted internal reflections and ghosting that can compromise your images.


UV Protection

The filter blocks UV light and reduces the bluish cast of daylight which can affect color accuracy, especially at higher altitudes.


Brass Construction

The durable brass filter ring offers a substantial, premium feel. The unique properties of brass minimize the chance of jamming or binding when you're screwing the filter onto your lens or stacking filters.


Slim Design

Measuring only 3.2mm, this filter is slim enough to use on wide-angle lenses without experiencing vignetting.


Secure Attachment

It takes two full turns to mount the filter on your lens. This feature will securely hold your Simmod filter through the most demanding shoots.


Front Threads

The front threads on the filter allow you to stack filters by screwing them onto your Simmod filter.



    ***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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