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Sample images provided by Justin Phillip / @kiddtech
Watch the Comprehensive Review + Comparision


The Aria Mist - Black Diffusion filter from Simmod is an industry-standard softening filter for 4x5.65 matte boxes.  Designed by award-winning DP Ron Sim csc, Aria Mist creates a cinematic look by lowering contrast, suppressing and diffusing highlights, while lifting shadows to help balance the tonal range of an image.  In addition to its cinematic capabilities, Aria Mist can also be used for portrait and fashion photography as it softens wrinkles and blemishes and creates a flattering image of a subject.  On modern and high-contrast vintage photo lenses, the effect is most effective when capturing light that diffuses softly when backlit, creating a transparent light that looks like it was taken with a high-quality vintage cinema lens.  Aria Mist filters provide little loss of detail across the image compared to traditional diffusion and soft focus filters.


Aria Mist Filters are constructed from 2 layers of the highest quality Schott glass, grinding flat to a tolerance of 1/10,000th of an inch, then laminating each substrate.  Each layer of glass is nano-coated on each side to provide anti-reflective properties and repel water, grease, and oil. 


Aria Mist Filters are sold individually or in a complete set of 3 filters, each with a diffusion density of 1/8, 1/4, and 1/2.


  • Reduces highlights and lowers contrast
  • Creates a cinematic look
  • Softens wrinkles and blemishes
  • Delicately captures flare
  • Creates a soft, pastel-like quality
  • Softly diffuses light
  • Resolution is maintained while contrast and sharpness are understated
  • High-quality brass frame
  • Nano resistance coating repels water, oil, and grease
  • Protective felt case



    ***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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