SIRUI Astra Series 1.33x Full-Frame Autofocus Anamorphic Cinema Lens

Name: SIRUI Astra Series 1.33x Full-Frame Autofocus Anamorphic Cinema Lens
Brand: SIRUI Optical GmbH
SKU: AST-50-EN
Price: 999.0 EUR
Availability: InStock

SKU: AST-50-EN

€999,00

incl. VAT Shipping will be calculated at checkout.

Focal Length

50mm 75mm 100mm 50mm+75mm+100mm

Flare

Neutral Blue

Mount

E L Z

Product variants

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Astra series

1.33x full-frame autofocus anamorphic cinema lens

50 / 75 / 100mm T1.8

Stories come alive in the anamorphic look
Astra series with three focal lengths
From expansive image worlds to widescreen reality

Full Frame

Autofocus

1.33x

Constant squeeze ratio

T1.8

Bright aperture

620g

(50mm E-Mount)

Lens flare

Blue/neutral

Mount

E / L / Z

Uniform in Set

The world's first

Full-frame autofocus anamorphic cinema lens

From pioneering lightweight anamorphic lenses to introducing the first full-frame autofocus model, SIRUI drives high technology forward again. The Astra series – 50mm, 75mm, 100mm – combines compact design with outstanding anamorphic look and efficient workflow.

Length 131mm

Weight 620g
(50mm E-Mount)

Full-frame anamorphic

T1.8 bright aperture

Aluminum alloy

AF/MF switch

E/L/Z mount

44 mm image circle The image circle fully covers full-frame sensors, is compatible with mirrorless systems, and ready for professional film production.

APS-C

SUPER 35

Full Frame

Autofocus for solo operators

Traditional full-frame anamorphics rely on manual focusing, which limits efficiency and usually requires a large team – typical for professional film crews. The SIRUI Astra series introduces fast and precise autofocus, making a focus puller unnecessary. This significantly increases shooting efficiency and allows solo operators or small teams to effortlessly create professional cinema.

AF/MF switch

Switch to manual focus for precise, controllable shots.

Built-in focus distance scale and compatibility with LiDAR follow focus ensure consistent focus tracking and support efficient and stable professional filmmaking.

Constant 1.33× squeeze ratio

Most mirrorless cameras record in 16:9 format. With a 1.33× squeeze ratio, this lens directly delivers the classic 2,4:1- Restore the widescreen cinema look – without cropping and without pixel loss, for high-resolution, immersive images.

Approx. 2.4:1 aspect ratio

Oval bokeh circles and vertical background stretch bring classic cinematic aesthetics to life.

Shine in the dark with T1.8

Even in low light or night scenes, the brightness provides enough illumination for high-quality, low-noise footage. The shallow depth of field creates a soft bokeh and a natural separation of the subject from the background, effortlessly guiding the viewer's gaze.

Cinematic art

- A fusion of classic and modern

While the Astra series preserves the distinctive anamorphic look, it improves central sharpness. The classic rendering of the image edges meets modern control over distortion and focus breathing, achieving a balanced harmony that defines the true anamorphic character.

18 Elements in 14 Groups

- Unique Backlight Lens Flare

Two classic flare types emphasize the lens's characteristic anamorphic style and reveal a distinctive cinematic look.

Blue Flare

Ideal for creating cinematic looks in sci-fi, mystery, and urban environments.

Neutral Flare

Presents light in its natural form, suitable for everyday shots, nature scenes, etc.

Excellent Close-Up Performance

Portraits and vivid close-ups with detailed rendering are effortlessly captured. The bright T1.8 aperture adds depth, texture, and atmospheric density.

50mm Minimum Focus Distance: 0.5 m

75mm Minimum Focus Distance: 0.6 m

100mm Minimum Focus Distance: 0.7 m

Uniform in Set

Consistent color and tonal character across all three focal lengths enables quick lens changes and simplifies post-production.

50mm

75mm

100mm

Perfectly Crafted

67 mm Filter Thread

Dual Scale – Feet/Meters

72 mm Outer Diameter

Triple Protection
(Dustproof, Dirt-Resistant, Rain-Resistant)

Identical Gear Position

E / L / Z Mount

AF / MF
Switch between Autofocus and Manual Focus

FN
Autofocus Lock / Custom Button Assignment

SIRIS LOCK
In "A" position, aperture is automatic; switching allows manual aperture control

CLICK ON / OFF
Clicked (stepped) / Unclicked (stepless) Aperture

3 Years

Replacement

Lifetime

Warranty

Free replacement within 3 years for non-human-caused damage (with valid proof of purchase). Lifetime paid repair service for human-caused damage.

*The above warranty applies only to products purchased through official SIRUI Stores or authorized dealers. Details can be found on the warranty card.

Packing List

Lens Only

1. Lens

2. Packaging Box

3. Carrying Bag

4. Lens Cap

5. Lens Cleaning Cloth

6. Warranty Card

Set

1. Lens × 3

2. Protective Case

3. Lens Cap

4. Lens Cleaning Cloth

5. Warranty Card

Specifications

Lens

Format Coverage

Full Frame

Focal Length

50mm

75mm

100mm

Aperture

T1.8-T22

Lens Construction

18 Elements in 14 Groups (4 Cylindrical Elements, 1 Aspherical Element)

18 Elements in 13 Groups (4 Cylindrical Elements, 1 Aspherical Element)

18 Elements in 13 Groups (5 Cylindrical Elements)

Aperture Blades

Shooting Distance

0.5M (1.64ft)～∞

0.6M (1.97ft)～∞

0.7M (2.3ft)～∞

Focusing Method

MF / AF

Max. Magnification

1:7.2 (V)
1:10.2 (H)

1:6.06 (V)
1:8.13 (H)

1:7.5 (V)
1:10.0 (H)

Angle of View (Full Frame)

13.7°(V)
56.8°(H)
60.9°(D)

27.2°(V)
36.9°(H)
40.37°(D)

29.8°(V)
27.4°(H)
32.3°(D)

Filter Size

M67*P0.75

Focus Ring Rotation Angle

136°

Max. Diameter

Φ80 mm / 3.15 inches
(E/Z/L-Mount)

Focus Ring Diameter

Φ80 mm / 3.15 inches

Aperture Ring Diameter

Φ75.2 mm / 2.96 inches

Outer Diameter

φ72mm

Focus Motor

STM

Length
(without lens cap)

E-Mount: 131 mm / 5.16 inches
Z-Mount: 133 mm / 5.24 inches
L-Mount: 128.9 mm / 5.07 inches

E-Mount: 135.3 mm / 5.33 inches
Z-Mount: 137.3 mm / 5.41 inches
L-Mount: 133.2 mm / 5.24 inches

Weight
(without lens cap)

E-Mount: 620 g / 1.37 lb
Z-Mount: 636 g / 1.4 lb
L-Mount: 625 g / 1.38 lb

E-Mount: 650 g / 1.43 lb
Z-Mount: 666 g / 1.47 lb
L-Mount: 655 g / 1.44 lb

E-Mount: 700 g / 1.54 lb
Z-Mount: 716 g / 1.58 lb
L-Mount: 705 g / 1.55 lb

Compatibility with Sony Cameras

Model

Photo

Video

a5000

Compatible

a5100

Compatible

a6000

Compatible

Limited*

a6100

Compatible

a6300

Compatible

a6400

Compatible

a6500

Compatible

a6600

Compatible

a6700

Compatible

ZV-E10

Compatible

ZV-E10 ll

Compatible

ZV-E1

Compatible

FX2

Compatible

FX3

Compatible

FX30

Compatible

a7ll

Compatible

Limited*

a7lll

Compatible

a7lV

Compatible

a7R

Compatible

a7Rll

Compatible

a7Rlll

Compatible

a7RlV

Compatible

a7RV

Compatible

a7S

Compatible

a7Sll

Compatible

a7Slll

Compatible

a7C

Compatible

a7Cll

Compatible

a7CR

Compatible

a9ll

In Optimization

Compatible

Compatibility with Nikon Cameras

Model

Photo

Video

Z30

Compatible

Z50

Compatible

Z50ll

Compatible

Z6ll

Compatible

Z6lll

Compatible

Z7ll

Compatible

ZFC

Compatible

Compatibility with L-Mount Cameras

Model

Photo

Video

Lumix DC-S5

Compatible

Lumix DC-S5M2

Compatible

Lumix DC-S9

Compatible

Lumix DC-S1

Compatible

Lumix DC-S1H

Compatible

Lumix DC-S1R

Compatible

Lumix DC-S1R2

Compatible

Sigma FP

Compatible

Sigma FPL

Compatible

Sigma BF

Compatible

Leica SL1

Compatible

Leica SL2

Compatible

Leica SL3

Compatible

Leica CL

Compatible

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SIRUI Astra Series 1.33x Full-Frame Autofocus Anamorphic Cinema Lens

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