ARRI Signature Prime 18mm T1.8 Lens (Feet)

BH #ARSP18T18F • MFR #KK.0019189
ARRI
ARRI Signature Prime 18mm T1.8 Lens (Feet)
Key Features
  • Covers Large-Format Sensor Size
  • ARRI LPL LDS-2 Mount
  • T1.8 to T22 Aperture Range
  • Geared Focus and Aperture Control Rings
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The 18mm ARRI Signature Prime T1.8 (Feet) is a wide-angle lens in an array of large-format primes featuring organic images, attractive bokeh, and a fast T1.8 aperture for achieving shallow depth of field. This prime lens gently softens the large-format look, and produces pleasant, natural skin tones. Focus falls off smoothly, highlighting your subject against its background frame. This LPL-mount lens features ARRI LDS-2 lens-data compatibility for speedy lens setups, and high lens metadata rates.
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ARRI Signature Prime 18mm T1.8 (ft) Overview

The 18mm ARRI Signature Prime T1.8 (Feet) is a wide-angle lens in an array of large-format primes featuring organic images, attractive bokeh, and a fast T1.8 aperture for achieving shallow depth of field. This prime lens gently softens the large-format look, and produces pleasant, natural skin tones. Focus falls off smoothly, highlighting your subject against its background frame. This LPL-mount lens features ARRI LDS-2 lens-data compatibility for speedy lens setups, and high lens metadata rates.

Designed for use with full-frame, large-format sensors, the versatile ARRI Signature Primes also cover Super 35. Dedicated LF Open Gate, and Super 35 Open Gate magnetic format masks enable you to switch between formats, and are included with the lens. Stockings, nets, and voile can be used for diffusion when mounted in the Signature Prime's rear net holder. Eleven iris blades produce smooth, rounded bokeh effects, and a telecentric design minimizes breathing. The LDS-2 lens data system is backwards-compatible with ARRI's LDS-1, and communicates with Cooke's /i Technology.

Constructed with magnesium housings and aluminum gear rings, each Signature Prime is lightweight, water-resistant, and features focus marks in feet. Anti-reflective coatings, light baffles, and light traps help to minimize any internal barrel flare. Should a stunt go awry, or your camera rig be otherwise damaged, the front and rear lens elements of the lens are easily replaceable at an ARRI service center. The18mm ARRI Signature Prime focuses down to 5.1" from the lens front, and features a light weight of 4.4 pounds, and a compact length of 7".

Features

  • The LPL mount transfers lens data via LDS-2, and is compatible with ARRI LDS-1, and Cooke /i Technology
  • Smooth focus fall-off, and a fast, maximum T1.8 aperture for shallow depth of field
  • Lightweight, compact form factor with magnesium and aluminum construction
  • One of a range of focal lengths from 12 to 280mm
  • 114mm front diameter across most lenses in the available set
  • An 11-blade iris produces smooth, round bokeh
  • Anti-reflective coatings, light baffles, and light traps minimize internal flare

ARRI Signature Prime 18mm T1.8 (ft) Specs

Focal Length18mm
Lens MountARRI LPL
FormatFull Frame
Image Circle44.7 mm
Maximum T-StopT1.8
Minimum T-StopT22
Diagonal Angle of ViewARRI LF Open Gate: 102.6°
Horizontal Angle of ViewARRI LF Open Gate: 91.4°
Minimum Focus DistanceFrom : 13.78" / 0.35 m
Iris Blades11
Gear MOD & PitchFocus: 0.8 MOD / 32 Pitch
Iris: 0.8 MOD / 32 Pitch
Zoom: 0.8 MOD / 32 Pitch
Front Diameter114 mm
Filter ThreadNone
Focus ScalesImperial
Electronic CommunicationYes
Maximum Magnification Ratio1:9.2
Tripod Mounting ThreadNone
Dimensions (W x H)4.53 x 4.53" / 115.06 x 115.06 mm
Length7.01" / 178.05 mm
Weight4.41 lb / 2 kg
Packaging Info
Package Weight14.695 lb
Box Dimensions (LxWxH)16 x 14.9 x 12"
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How does the focal length of these lenses on a ...

How does the focal length of these lenses on a full frame body like the LF compare to master primes on super35mm?
Asked by: nick
This lens can cover a full frame sensor. If used on a camera that is Full Frame it will give you an 18mm view. If you use it on a camera that has a Super 35mm Sensor it will give you a 27mm field of view.
Answered by: Joseph
Date published: 2019-05-26
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