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ARRI 75mm Signature Prime T1.8 - LPL Mount

Abel Code: signature75
Mfr. Code: KK.0019106
This 75mm prime lens is designed specifically for use with the large-format ARRI ALEXA LF, and features a T1.8 max. aperture, 114mm front diameter, close focus at 26" (0.65m), and an LPL Mount.
Key Highlights
  • 75mm T1.8 Prime
  • 114m front diameter
  • MOD: 26" (0.65m)


The ARRI 75mm Signature Prime T1.8 - LPL Mount is designed specifically for use with the ARRI ALEXA LF large format digital cinema camera. While Signature Primes exemplify state-of-the-art optical precision, they have been designed to render organic, emotionally engaging images, gently softening and texturizing the large format with natural skin tones and creamy bokeh. A fast maximum aperture of T1.8 facilitates shallow depth of field and the smooth focus fall-off gives subjects heightened presence in the frame.

This lens is fitted with the ARRI LPL mount, optimized for large-format sensors. A wider diameter and shorter flange focal depth allows the ARRI Signature Prime lenses and all future large-format optics to be small and lightweight, with a fast T-stop and pleasing bokeh. This combination of features would not be possible within the confines of the typical PL lens mount.

The ARRI Signature Prime range is the first cine lens series to feature machined magnesium lens barrels, making the optics incredibly lightweight and robust. They are also the first to incorporate ARRI’s next-generation LDS-2 Lens Data System, with high data rates and absolute encoders for fast initializing. LDS-2 extends the possibilities of lens data and is being licensed to other lens and camera manufacturers.


  • Exceptional resolution, with natural skin tones and creamy bokeh
  • Future-proof telecentric optical design results in better contrast, skin rendition, and flare behavior
  • Next-generation LDS-2 Lens Data System with 10x precision of original LDS (1 Mbps vs 115 Kbps)
  • Excellent optical performance across the whole aperture range from T1.8 to T22
  • Magnesium construction makes each lens ~2 lb lighter than Master Prime (on average), at comparable overall size
  • Uniform positions of iris and focus gears
  • Universal net holder & magnetic positioning system
  • LPL Mount


  • Focal Length: 75mm
  • Max. Aperture: T1.8
  • Minimum Object Distance: 26" (0.65m)
  • Weight: 4.2 lb (1.9 kg)


What's in the Box

  • 1 x ARRI Signature Prime 75/T1.8 F


Key Highlights

  • 75mm T1.8 Prime
  • 114m front diameter
  • MOD: 26" (0.65m)
  • LDS-2 Lens Data System
  • LPL Mount

Lens Characteristics

Prime or Zoom:
Lens Mount:
Focus Scale:
Fixed Focal Length:
Front Diameter:
Image Circle:
Max Dimensions (Diameter x Length):
115mm x 178mm (4.53" x 7.01")
Magnification Ratio:
1:7.2 - at MOD (Paraxial)
Aperture Range:
T1.8 to T22
Minimum Focus Distance:
26" (0.65m) - from sensor plane
Max Angle of View:
33.2degrees - Diagonal (for LF Open Gate)

Support for Every Production

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