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IRIX 21mm T1.5 Cine Lens (PL, Feet)

BH #IRC21PLI • MFR #IL-C21-PL-I
Key Features
  • Covers Full-Frame Sensor Size
  • 43.3mm Image Circle
  • Aperture Range: T1.5 to T16
  • Engraved, Luminous Focus Marks in Feet
Designed for up to 8K cine-style image capture, the PL-mount 21mm T1.5 Cine Lens from IRIX produces a distortion-free, wider-angle look that is compatible with sensor sizes up to full-frame 35mm. External features include a 95mm front diameter, 0.8 MOD gears, luminous focus marks in feet, and a detachable 1/4"-20 support foot. Internally, 11 blades produce smooth, rounded bokeh, and four seals protect against inclement weather and dust. A fast T1.5 maximum aperture enables the IRIX 21mm T1.5 Cine Lens to capture images in low light conditions without the need for super-high ISO settings.
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IRIX 21mm T1.5 Cine (ft) Overview

  • 1Description
  • 2The IRIX Look
  • 3Distortion-Free Wide Lens
  • 4Ready for Any Weather Condition
  • 5Functionality and Innovation
  • 6Cine Standards
  • 7Adaptive Gear Ring
  • 8Magnetic Mount System
  • 9Lightweight and Compact Design
  • 10Improved Lens Cover
By B&H Photo's

Designed for up to 8K cine-style image capture, the PL-mount 21mm T1.5 Cine Lens from IRIX produces a distortion-free, wider-angle look that is compatible with sensor sizes up to full-frame 35mm. External features include a 95mm front diameter, 0.8 MOD gears, luminous focus marks in feet, and a detachable 1/4"-20 support foot. Internally, 11 blades produce smooth, rounded bokeh, and four seals protect against inclement weather and dust. A fast T1.5 maximum aperture enables the IRIX 21mm T1.5 Cine Lens to capture images in low light conditions without the need for super-high ISO settings.

This lightweight, aluminum/magnesium alloy lens produces smooth, rounded bokeh, color, and contrast that matches the T1.5 30 and 45mm primes in the IRIX Cine series. An adaptive focus ring delivers smooth focusing whether used manually or with a lens motor.

The IRIX Look
The IRIX Cine 21mm is a wide 43.3mm full-frame lens that conveys the IRIX "look" featuring shallow depth of field, soft highlights, subtle mist, and distinctive bokeh created by the rounded iris blades.
Distortion-Free Wide Lens
Wide enough for working in tight spaces but not so wide as to distort, the IRIX Cine 21mm keeps your subject's natural proportions and creates a sense of being there in the shot for viewers.
Ready for Any Weather Condition
Rain or shine, the rugged and durable construction of the IRIX Cine 21mm guarantees that you can keep on working with whatever the weather throws at you. The lens is resistant to rain, sand, and dust, so you can take it for your next adventure in a desert or jungle if your camera can handle those environments. Engraved markings on the lens have been filled with UV-reactive paint, so filming in difficult lighting conditions becomes much easier.
Functionality and Innovation
All IRIX cinema lenses have very similar dimensions and weight, which allows for quick and easy lens changes without the need to change the rest of your setup. The product is equipped with a Magnetic Mounting System (MMS) that lets you connect accessories such as magnetic filters from the Irix Edge lineup or an optional lens hood.
Cine Standards
The IRIX Cine 21mm was designed in accordance with the standards of the professional film industry, being the result of a combination of traditional lens solutions and modern innovation. This 21mm has a front filter thread size of 95mm and geared 0.8 MOD rings, which ensures compatibility with most accessories available on the market.
Adaptive Gear Ring
The adaptive gear ring is an innovative function you will love, no matter if you are a pro or an amateur. The ring has been designed to keep the lens housing sleek and user-friendly when operated manually, without any compromises when you want to use your favorite cine gear.
Magnetic Mount System
All the IRIX Cine lenses have a Magnetic Mount System (MMS) compatible with the separately available IRIX Edge MMS filters and IRIX MMS lens hood. The IRIX Edge magnetic filters have a unique threadless design, so you can be sure that everything stays clean and ready for action. The MMS filters can be stacked together, enabling you to not only freely combine them but to save space when stored. All the IRIX Edge MMS filters are made of hardened optical glass (SR) with a multilayer, antireflective nano-coating that makes them easy to clean.
Lightweight and Compact Design
The aluminum-magnesium alloy construction makes the lens housing weight only 2.4 to 2.6 lb, depending on the mount. It has a front external diameter of 95mm to fit most matte boxes and accessories, an 86mm filter thread, and a front Magnetic Mount System (MMS) for rapid filter and hood replacement.
Improved Lens Cover
The previous lens cover didn't allow leaving the lens standing on a surface, so the improved cover has a flat top and slides on the lens. Thanks to this redesign, you can now leave the lens upside down on a table and not worry about it wobbling.

IRIX 21mm T1.5 Cine (ft) Specs

Focal Length
21mm
Maximum Aperture
T1.5
Minimum Aperture
T16
Lens Format Coverage
Full Frame
Image Circle
43.3 mm
Focus Scales
Imperial
Optical Design
15 Elements in 11 Groups
Filter Thread
No
Minimum Focus Distance
From Camera Sensor: 11.8" / 0.3 m
Diaphragm Blades
11, Rounded
Image Stabilization
No
Electronic Communication
No
Dimensions (W x H)
3.7 x 3.7" / 95 x 93 mm
Weight
2.4 lb / 1105 g
Packaging Info
Package Weight
3.335 lb
Box Dimensions (LxWxH)
7.4 x 5.8 x 5.5"

IRIX 21mm T1.5 Cine (ft) Reviews

See any errors on this page? Let us know

How is the depth of field of this lens? Is it a ...

How is the depth of field of this lens? Is it a deep focus lens when stopped down to say 8 or 11 or 16?
Asked by: Richard
The depth of field will vastly increase when stopping down the IRIX 21mm T1.5 Cine Lens (Canon EF, Feet) past T8 while retaining sharpness.
Answered by: Richard
Date published: 2023-01-16

Using this lens in a BMPCC 6K Pro woudl be the ...

Using this lens in a BMPCC 6K Pro woudl be the equivalent of using a 35mm (aprox) in a full frame camera?
Asked by: Freddy
On the 6k Pro, it would be equivalent to 32.76mm.
Answered by: niconn
Date published: 2023-01-15

what is the solution to add an Uv protection ...

what is the solution to add an Uv protection filter on this lens?
Asked by: montreuil
The best option for putting a UV filter in front of the IRIX 21mm T1.5 Cine Lens (Sony E, Feet) would be to use a matte box with filter holders or a filter tray.
Answered by: Paige K
Date published: 2023-07-14

Using this lens with Matte Box, like a Tilta ...

Using this lens with Matte Box, like a Tilta Mirage, will I get some vignetting?
Asked by: Quentin
Tilta suggest not to use a lens that is wider than 25mm on a full frame sensor, regarding vignetting.
Answered by: JonathanS
Date published: 2023-09-28
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