Astra Series

1.33x Full Frame Auto Focus Anamorphic Cine Lens

50 / 75 / 100mm T1.8

Stories come alive in anamorphic
Astra Series with three focal lengths
From vast imagery to widescreen world

Full Frame

Auto Focus

1.33x

Constant Squeeze Ratio

T1.8

Fast Aperture

620g

(50mm E Mount)

Flare

Blue/Neutral

Mount

E / L

Consistent in A Set

The World's First

Full Frame Auto Focus Anamorphic Cine Lens

From pioneering lightweight anamorphic lenses to launching the first full-frame autofocus, SIRUI once again pushes high-end technology further. 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 Fast Aperture

Aluminum Alloy

AF/MF Switch

E/L Mount

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

APS-C

SUPER 35

Full Frame

Solo-Ready Auto Focus

Traditional full frame anamorphic lenses rely on manual focus, which limits efficiency and requires large crews, typically for professional film teams. SIRUI Astra Series introduces fast and precise autofocus, eliminating the need for a focus puller. This significantly increases shooting efficiency, enabling solo operators or small teams to shoot professional cinema with ease.

AF / MF Switch

Switch to manual focus for precise, controllable shots.

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

Constant 1.33x Squeeze Ratio

Most mirrorless cameras shoot in 16:9. With a 1.33x squeeze rratio, this lens directly restores the classic 2.4:1 widescreen cinematic look-no cropping, no pixel loss, delivering a high-resolution! immersive image.

Approximately 2.4:1 Ratio

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

Shine in the Dark with T1.8

Provides ample light even in low-light or night scenes for high-quality and clean images. The shallow depth of field creates soft bokeh and natural subject separation, guiding the viewer's focus with ease.

Cinematic Artistry

· A Fusion of Classic and Modern

While maintaining the distinctive anamorphic character, the Astra Series improves central sharpness. Vintage edge rendering meets modern control of distortion and focus breathing, achieving a refined balance that defines true anamorphic character.

18 Elements in 14 Groups

·Unique Backlight Flare

Two classic flares highlight the lens' signature anamorphiccharacter, revealing a distinctive cinematic look.

Blue Flare

Perfect for creating cinematic looks in sci-fi, mystery, and urban-style environments, etc.

Neutral Flare

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

· Outstanding Close-Up Performance

Easily capture portraits and vivid close-ups with rich detail.
T1.8 fast aperture adds depth, texture and atmosphere.

v50mm Minimum Focus Distance: 0.5m

v75mm Minimum Focus Distance: 0.6m

v100mm Minimum Focus Distance: 0.7m

· Consistent in A Set

Uniform color and tone across three focal lengths, enabling fast swapping and easier post-production.

50mm

75mm

100mm

Crafted to Perfection

67mm Filter Thread

Dual Scale--Feet/Meter

72mm Outer Diameter

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

Identical Gear Position

E / L Mount

AF / MF
Switch between auto focus and manual focus

FN
Auto focus lock/customization

IRIS LOCK
Lock at "A" for auto aperture, or switch for manual aperture control

CLICK ON / OFF
Stepped aperture/stepless aperture

3 Years

Replacement

Lifetime

Warranty

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

*Warranty above is valid only for products purchased from officcial SIRUI stores or authorized dealers. Please refer to the warranty card for details. pass

Packing List

Lens Only

1. Lens

2. Packaging Box

3. Carrying Bag

4. Lens Cap

5. Lens Cleaning Cloth

6. Warranty Card

Kit

1. Lens * 3

2. Safety 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 Structure

18 Elements in 14 Groups (4 Cylindrical Lenses and 1 Aspherical Lens)

18 Elements in 13 Groups (4 Cylindrical Lenses and 1 Aspherical Lens)

18 Elements in 13 Groups (5 Cylindrical Lenses)

Aperture Blade

11

13

Shooting Distance

0.5M(1.64ft)～∞

0.6M(1.97ft)～∞

0.7M(2.3ft)～∞

Focus Method

MF / AF

Max Magnification

1：7.2(V）
1：10.2（H)

-0.165(V）
-0.123（H)

1：7.5(V）
1：10.0（H)

FOV (Full Frame)

27.8°(V)
56.8°(H)
60.9°(D)

18.52°(V)
36.9°(H)
40.37°(D)

18.4°(V)
27.4°(H)
32.3°(D)

Filter Size

M67*P0.75

Focus Ring Rotation Angle

136°

Max Diameter

Φ80mm / 3.15inch
(E/L Mount)

Focus Ring Diameter

Φ80mm / 3.15inch

Aperture Ring Diameter

Φ75.2mm / 2.96inch

Outer Diameter

φ72mm

Focus Motor

STM

Length
(Exclude Lens Cap)

E Mount: 131mm / 5.16inch
L Mount: 128.9mm / 5.07inch

E Mount: 135.3mm / 5.33inch
L Mount: 133.2mm / 5.24inch

Weight
(Exclude Lens Cap)

E Mount: 620g / 1.37lb
L Mount: 625g / 1.38lb

E Mount: 650g / 1.43lb
L Mount: 655g / 1.44lb

E Mount: 700g / 1.54lb
L Mount: 705g / 1.55lb

Sony Camera Compatibility

Model

Photo

Video

a5000

Compatible

a5100

Compatible

a6000

Compatible

Partial*

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

a7

Compatible

a7ll

Compatible

Partial*

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

a9

Compatible

a9ll

Optimizing

A1

Compatible

L Mount Camera Compatibility

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

75mm & 100mm | Compression & Subject Isolation

SIRUI Astra 50/75/100mm T1.8 1.33x Full-Frame Autofocus Anamorphic Cine Lens