OptMag 1.4x Expander

The Highlight Reel

  • Increases the image circle of the taking lens

  • Increases focal length by 1.4x

  • PL mount lens to PL mount camera

  • Integrated flange back adjustment for easy set-up and fine tuning

  • Reduces light by 1.0 stops

  • Made in Japan



The OptMag TL-OM14F 1.4x expander from Musashi Optical adapts your Super 35 lenses to to cover full frame sensors with an image circle up to 44mm. This covers the traditional 36x24mm sensor size and smaller. Its optical design was created to minimize the impact on the optical character of the taking lens.

The expander increases your focal length by 1.4x and reduces your light by just 1.0 stop. This is how the Musashi Optical OptMag Expander can convert a Super 35 lens to cover full frame sensors.

The 1.4x expanders sets up easily with its own integrated flange back adjustment, no shimming necessary.  

It should also be noted that the super 35 lens used must protect an image circle of at least 31mm into the camera natively.

12/02/21 UPDATE - Musashi Optical has added a new version of the TL-OM14F, the TL-OM14FE which has a Sony E-mount built-in to the camera side of the expander that is secured by 6 high durability alloy set screws sunk into a stainless steel base. This eliminates flex, possible movement and gaps that can happen with a separate PL to E-Mount adapter is used between the camera and the expander. This version works great with the Sony Venice and FX series cameras in Super 35 Mode.

Not compatible with all lenses, please contact us with specific questions.