1.4X Full Frame Expander


Laowa 1.4X FF Expander is specifically designed to expand the lens coverage from Super35 to full-frame without any loss in image quality. It also increases the effective focal length of the lenses by a factor of 1.4X and reduces the effective aperture of the lens by one stop.

Fully compatible with the OOOM and Proteus series, this expander is an excellent choice for switching between lenses and expanding their shooting capabilities as needed.

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1.4X Full Frame

Expanding the coverage from S35 to Full-Frame

Fully Compatible with the Proteus Series

The 1.4X Full Frame Expander is fully compatible with our Proteus Series, allowing the lenses to be used on Full-Frame cameras without a significant loss in image quality.

Sensor Coverage

1.4x full frame expander scale

The maximum coverage of OOOM Laowa 25-100mm T2.9 can be converted from RED Monstro 8K VV 6K HD to RED Monstro 8K VV – 8K HD after applying the 1.4X Full Frame Expander.

Easy Back Focus

Specially designed mechanism to replace shims

The adapter is compatible with some other S35 lenses. Check the back structure of your lenses with the clearance check tool provided.



Laowa 1.4x Full Frame Expander
Focal Length Extension1.4X
With 25-100 focal length35-140mm
With 25-100 T-stop Range4-32
Image Circle Diameter46.5mm
Diameter89mm (3.5″)
Length57.5mm (2.26“)
Weight~330g (0.73lbs)
MountsPL-PL/ PL-E/ PL-EF/ EF-E

Additional information


PL-PL, Bundle (1.33x Rear Anamorphic Adapter & 1.4x Full Frame Expander)


1.33x Anamorphic adapter & 1.4x Full Frame Expander