Originally designed for Medium Format film cameras, these vintage Mamiya Sekor C's provide amazing sharpness, bokeh, and flare.  Covering 8K and VistaVision, these will work on all modern cine cameras, including Arri, RED, Black Magic, and many others.


In pristine condition, the Mamiya Sekor C/N 645 SIMMOD Set consists of the following focal lengths:


Sekor C/N 35mm f3.5

Sekor C/N 45mm f2.8

Sekor C/N 55mm f2.8

Sekor C/N 80mm f4.0 Macro

Sekor C/N 80mm f1.9

Sekor C/N 150mm f3.5


Each lens has received the following modfictions for Cine:

De-Clicked and Dampened Aperture Ring

Installation of a Follow Focus Gear

80mm OD Ring








    ***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 design@simmodlens.com 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 design@simmodlens.com 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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