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Sirui 35mm 1.33x Anamorphic
Camera · Technique

Sirui 35mm 1.33x Anamorphic

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Sirui 35mm 1.33x Anamorphic manual cinema lens with f/1.8 aperture and 1.33x squeeze ratio for Super35/APS-C sensors.

Overview

The Sirui 35mm F1.8 1.33x Anamorphic is a manual focus anamorphic cinema lens from Chinese manufacturer Sirui. It belongs to the affordable 1.33x Anamorphic series, through which Sirui has made anamorphic optics accessible to smaller productions and hobbyist filmmakers. The lens horizontally compresses the image by a factor of 1.33x: when shooting with a 16:9 sensor, a cinematic aspect ratio of approximately 2.4:1 is achieved after de-squeezing. Characteristic features are the blue streak flares (lens flares) typical of anamorphic optics, as well as oval bokeh highlights in the out-of-focus areas.

The lens is designed for the Super35 or APS-C image circle; an identical variant exists for the smaller MFT format (Micro Four Thirds). Focus and aperture are set manually – this older 35mm version does not have an autofocus function.

Technical Specifications

ParameterValue
Focal Length35 mm
Anamorphic Squeeze Factor1.33x
Aperture / Aperture Rangef/1.8 to f/16
Image CircleSuper35 / APS-C (also MFT variant)
Optical Construction13 elements in 9 groups
Diaphragm Blades10
Filter Thread67 mm
Minimum Focusing Distanceapprox. 0.85 m
Weightapprox. 700 g
Lengthapprox. 117 mm
Focusingmanual

The lens is available in several native mounts (including MFT, Leica L, Canon RF) as well as for Sony E, Canon EF-M, and Nikon Z.

On-Set Usage

The lens is primarily used for narrative short films, music videos, and corporate films where an anamorphic look is desired on a small budget. In post-production, the compressed footage must be de-squeezed (1.33x de-squeeze) to ensure correct proportions and the widescreen aspect ratio; many editing programs and cameras offer a corresponding preset for this.

Since focus and aperture operate purely mechanically, the lens is suitable for controlled work with a follow focus and matte box. However, the comparatively large minimum focusing distance of around 0.85 m limits very close shots of small objects – an achromatic attachment lens (diopter) is usually required for tight inserts. The pronounced blue horizontal flares can be deliberately provoked by direct or side light sources in the frame and are an essential stylistic element of the anamorphic look.

From the crafts

Perspectives

Cinematographer

Das Sirui 35mm 1,33x ist mein bevorzugtes Objektiv der Serie für klassische cinematische Aufnahmen. Die 35mm Brennweite bietet eine natürliche Perspektive, die weder zu eng noch zu weit wirkt. Kombiniert mit dem anamorphen Look entstehen filmische Bilder, die cineastisch wirken, ohne dabei künstlich zu wirken. Die Verarbeitungsqualität ist auch bei diesem Budget-Objektiv beeindruckend.

Director

Mit der 35mm 1,33x erhalte ich die perfekte Balance für emotional prägende Momente. Die Brennweite ermöglicht es mir, Charaktere und ihre Umgebung in harmonischer Weise zu zeigen. Der anamorphe Charakter mit den ovalen Bokeh-Effekten unterstützt die emotionale Tiefe meiner Story, während das Budget geschont bleibt.

Producer

Das Sirui 35mm 1,33x ist die wirtschaftlichste Lösung für Productions, die den klassischen cinematischen Look brauchen. Mit dieser Brennweite als Kern-Objektiv kann ich verschiedenste Szenen drehen, ohne zu viele unterschiedliche Objektive zu benötigen. Das reduziert Kosten und Komplexität erheblich.

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