SIRUI 50mm F1.8 1.33X SR-MEK7E Anamorphic Lens Review: Expands the Field of View by 33 Percent

Where the SIRUI 50mm Anamorphic Fits

SIRUI 50mm F1.8 1.33X SR-MEK7E Anamorphic Lens produces a 1.33X squeeze factor for filmmakers who need to capture a widescreen cinema format 2.4:1.

Capturing an indie scene in low light requires a wide maximum aperture to maintain a usable shutter speed and ISO. The SIRUI 50mm Anamorphic provides an f/1.8 aperture, which is sufficient for shooting cinematic portraits with a blurry background or low-light scenes.

This lens achieves that look through its 50 mm focal length, which provides a 33% wider field of view than conventional 50 mm lenses. By offering a 37.5 mm equivalent field of view, it allows for a more versatile perspective while maintaining the anamorphic aesthetic.

We chose this lens from 51 cinema lenses for a full review because it has 366 buyer ratings, the 2nd most of the 51 screened. Our research involves analyzing listing data to compare specifications like aperture, weight, and mount compatibility. This review is for filmmakers who need a specific anamorphic look on an E-mount system.

The Short Answer on the SIRUI 50mm Anamorphic

Best for: you need to shoot a cinematic portrait with a blurry background on a Sony E-mount camera while utilizing an anamorphic squeeze.

The SIRUI 50mm Anamorphic is a practical choice for these requirements at the $286 mark.

• Pro: The f/1.8 maximum aperture provides enough light for low-light indie scenes.
• Pro: The 1.33X squeeze factor allows for a widescreen 2.4:1 cinema format.
• Pro: Schott glass elements provide a 33% wider field of view than conventional 50 mm lenses.
• Con: The manual focus system requires physical adjustment, which can slow down rapid-paced filming.
• Con: The 0.85 m closest focusing distance limits how close you can get to a subject for extreme close-ups.

Don’t buy this if: your camera setup does not use an E-mount connection, as this lens will not physically attach to other mounts.

Price assessment: At $286, this lens offers a fair price point for an anamorphic option featuring Schott glass.

You can also view our roundup of the best anamorphic lens for e mount setups.

The Specifications That Matter

The Squeeze Factor of 1.33X measures the ratio of the horizontal field of view to the vertical field of view.

Before You Buy: Cinema Lens Checklist

The first thing to check is whether your camera body uses the E-mount system, as this determines if the lens will physically attach to your gear.

• ☐ Confirm your camera uses an E-mount—if it does not, the lens will not mount and you will have to return it.
• ☐ Check the 0.85 m closest focusing distance—if you need to shoot subjects closer than this, the lens will be unable to focus and you will need a different glass.
• ☐ Verify the 1.33X squeeze factor—if you require a different squeeze ratio for your specific anamorphic look, the image will not match your desired format.
• ☐ Budget for a 67 mm filter thread—if you already own a filter system with a different thread size, you will need to purchase a new filter to use on this lens.

You should not buy this product if you require an automatic focusing system or if your camera body does not support the Sony E-mount.

Performance: What the Specs Deliver

Widescreen 2.4:1 Cinema Format

The SIRUI 50mm Anamorphic provides a field of view that is 33% wider than a conventional 50mm lens, which allows you to capture more of the scene horizontally while maintaining a cinematic look. This specific expansion means you can frame wider environments without needing to step back, which is useful when filming in tight interior spaces. The 1.33X squeeze factor—the ratio of horizontal to vertical field of view—is what creates this wider perspective and the characteristic oval bokeh.

Because this lens creates a 2.4:1 widescreen cinema format, you can capture high-end commercial footage or indie scenes that match standard movie proportions. You should check your camera’s sensor dimensions and confirm they support the 1.33X squeeze ratio before you order to ensure the image frames correctly. If your sensor is too narrow, the squeezed image may result in a crop that removes the extra horizontal space the lens provides.

How 11 Schott glass elements produce horizontal sci-fi reflections

The SIRUI 50mm Anamorphic utilizes 11 glass elements in 8 groups made from Germany-made Schott glass to produce its images. This construction supports the production of film production glass that produces horizontal sci-fi reflections and specific light effects. By using these specific glass elements, the lens enables you to achieve the characteristic anamorphic look, including the oval bokeh that defines this category of cinema lens.

Because the construction is optimized for anamorphic effects, it also facilitates the capture of wide-angle vlogs in small rooms where you need to maintain a 1 f-stop aperture. This optical layout ensures the lens can handle the light transmission required for low-light indie scenes while maintaining the intended widescreen characteristics.

Precise manual focus via a 143.6 degree rotation ring

Manual focus on the SIRUI 50mm Anamorphic is controlled by a focus ring with a 143.6° rotation angle and a 61.7 mm diameter. This physical rotation allows you to precisely rack focus during a shot, which is a requirement for maintaining continuity in professional film production. The manual nature of the focus means you have direct control over the plane of sharpness, which is essential for high-end commercial work where automated focus can be unpredictable.

The 143.6° rotation angle provides a specific range of movement that you can use to quickly pull focus between a foreground subject and a background element. Since the lens is designed for manual use, you can rely on the physical feedback of the ring to find your mark without the software interference of autofocus. This setup is suitable for a practical film set where the priority is consistent, repeatable focus across multiple takes of the same scene.

Common Buyer Jobs Checked Against the SIRUI 50mm Anamorphic’s Specs

The SIRUI 50mm Anamorphic against the jobs buyers ask about, worked out from its listed maximum aperture and a typical need for each job.

How the SIRUI 50mm Anamorphic Compares to Other Movie Camera Lenses

The 1.33x squeeze factor on the SIRUI 50mm Anamorphic provides a 2.4:1 widescreen cinema format, which is the standard for many cinematic productions. This squeeze ratio allows you to capture a wider horizontal field of view while maintaining a vertical frame that can be letterboxed in post-production.

You start by mounting the E-mount lens to your Sony camera and manually turning the focus ring, which rotates 143.6° to move the plane of focus. As you rack focus, the 11 glass elements produce oval bokeh and blue flares. You end up with a 33% wider field of view than a standard 50 mm lens, creating a compressed, cinematic look on your APS-C sensor.

Comparison to Similar Cinema Lenses

The SIRUI 50mm Anamorphic ranks as the highest-rated option among the five models we evaluated, with a 4.5 average from 366 buyer ratings.

• The SIRUI 50mm Anamorphic costs $13 less than the SIRUI Mars 1.33x T2 to T2.9 Anamorphic Lens Set.
• The SIRUI FFEK6-E 50mm T2.9 1.6X Anamorphic Lens provides a larger 1.6x squeeze factor and a 2.8:1 aspect ratio.
• The 7artisans 35mm T1.05 Cine Lens offers a wider T1.05 aperture for low-light use.
• The SIRUI 50mm Anamorphic MEK7M matches this lens’s f/1.8 aperture and 50 mm focal length.
• The SIRUI 24mm Anamorphic Lens F2.8 1.33X is $19 cheaper and provides a wider 24 mm focal length.

If you require a wider 24 mm field of view for tight spaces, the SIRUI 24mm Anamorphic Lens F2.8 1.33X is the better pick.

If you need a standard prime, read our full review of the Meike 50mm T2.1.

Where This Price Sits

You likely want to achieve a cinematic look without the massive footprint of traditional heavy glass. At the $286 mark, the SIRUI 50mm Anamorphic provides a specific trade-off by offering an f/1.8 aperture and a 1.33X squeeze factor, which allows you to capture the oval bokeh and horizontal sci-fi reflections typical of anamorphic cinema.

The similar cinema lens products we compared range from $267 to $301, with an average price of $287. This product sits $1 below that average. You get the 50 mm focal length and 11 glass elements in 8 groups, which provides a 33% wider field of view than conventional 50 mm lenses. You give up the extreme weight of larger glass, as this unit weighs approximately 560 g.

The SIRUI 50mm Anamorphic is the right buy for your project if you need a manual focus lens that provides a 1 f-stop aperture for low-light indie scenes while maintaining a compact 106.6 mm length.

From Delivery to First Use with This Movie Camera Lens

Preparing the SIRUI 50mm Anamorphic for Production

You must have a Sony E-mount camera body before the SIRUI 50mm Anamorphic can be used for filming. Will this lens fit your current rig? The E-mount connection allows for direct mounting on Sony NEX and Alpha systems.

1. Unpack the lens and verify the 67 mm filter thread on the front element.
2. Mount the lens to the camera body using the E-mount connection.
3. Attach a 67 mm lens hood to prevent flare and protect the front glass.
4. Thread a matte box onto the front to block stray light and hold additional filters.
5. Attach a follow focus system with a 61.7 mm focus ring diameter to enable smooth, repeatable focus pulls during production.

Warranty and Support: What to Check

Warranty terms and support availability differ depending on your specific seller and country. Before your return window closes, confirm the following details to ensure the glass meets your production needs:

• Verify the 11 glass elements in 8 groups are free of internal dust, as internal debris can affect the 2.4:1 widescreen cinema format.
• Check that the manual focus ring rotates the full 143.6° to confirm the focus throw meets your production speed.
• Inspect the Schott glass elements for any surface marks that could interfere with the horizontal sci-fi reflections.
• Confirm the 0.85 m closest focusing distance is sufficient for your intended subject proximity.

Test the lens on a test shot to verify the oval bokeh and blue flare characteristics the day it arrives.

The SIRUI 50mm Anamorphic: Remaining Questions

Which cinema lenses are best for shooting with a Sony Alpha camera?

The SIRUI 50mm F1.8 1.33X SR-MEK7E Anamorphic Lens features an E-mount, which is the native mechanical connection for Sony NEX and Alpha bodies. This allows you to mount the lens directly to your camera without needing an adapter to maintain the correct alignment.

How does the 1.33X squeeze factor affect the image?

The 1.33X squeeze factor measures the ratio of the horizontal field of view to the vertical field of view, creating a widescreen cinema format of 2.4:1. Because the squeeze is horizontal, the SIRUI 50mm Anamorphic produces an oval bokeh and horizontal sci-fi reflections rather than standard circular highlights.

Can the SIRUI 50mm Anamorphic shoot in low light?

Yes, the SIRUI 50mm Anamorphic can shoot in low light because it features an f/1.8 maximum aperture. This wide opening allows enough light to enter the lens to capture a low-light indie scene or a cinematic portrait with a blurry background.

What is the field of view for this lens?

The SIRUI 50mm Anamorphic provides a field of view 33% wider than conventional 50 mm lenses, which is equivalent to a 37.5 mm lens. This wider angle helps you capture more of the environment while maintaining a 50 mm focal length for subject magnification.

Is the SIRUI 50mm Anamorphic Right for You?

Who the SIRUI 50mm Anamorphic suits and the jobs it is the wrong choice for, listed below with the reason for each.

Where to Buy This Cinema Lens

When we looked in November 2026, the SIRUI 50mm Anamorphic was listed at $286 – a snapshot that may have changed since.

Cinema lenses are sold by the retailers below – we do not track which of them has the SIRUI 50mm Anamorphic in stock, so check availability and the current price with the retailer before making a trip.

• Amazon (online only) — high volume of third-party sellers and fast shipping
• Albert Instruments (online only) — specialist retailer for high-end cinema and specialty optics
• KEH Camera (online only) — reliable source for used and refurbished cinema lenses
• Adorama (online and physical stores) — wide selection of cinema gear and professional trade accounts
• B&H Photo Video (online and physical stores) — wide selection of cinema gear and professional trade accounts
• B&H Photo Video (online and physical stores) — wide selection of cinema gear and professional trade accounts
• Adorama (online and physical stores) — large inventory of cinema accessories and professional support

Final Verdict on the SIRUI 50mm Anamorphic

If you need to capture a cinematic portrait with a blurry background or shoot a low-light indie scene, the SIRUI 50mm Anamorphic is a capable choice for around $286. The 1 f-stop maximum aperture provides enough light for these tasks while creating the shallow depth of field required for professional-looking separation.

The SIRUI 50mm Anamorphic includes a 1.33X squeeze factor, which compresses the horizontal field of view to create a widescreen cinema format of 2.4:1. This squeeze works like a wide-angle lens for your horizontal frame while maintaining the vertical height of your sensor, allowing you to capture a wider scene than a standard 50 mm lens would allow.

The SIRUI 50mm Anamorphic uses Germany made Schott glass elements to produce horizontal sci-fi reflections and oval bokeh. These optical effects are characteristic of anamorphic glass, which differs from standard spherical lenses by stretching the shape of out-of-focus highlights into ovals.

This cinema lens features a 50 mm focal length with a 1.33X squeeze, resulting in an equivalent field of view of 37.5 mm. Because the field of view is 33% wider than conventional 50 mm lenses, you can capture wider architectural shots without the dark corners often found in wider glass.

The SIRUI 50mm Anamorphic provides a 1:15 (V) and 1:20 (H) maximum magnification. The 143.6° focus ring rotation angle allows for precise manual adjustments when setting your focus from the 0.85 m closest distance to infinity.

You should choose the SIRUI 50mm Anamorphic if you are filming on a Sony NEX or Alpha camera and need a dedicated anamorphic lens for a 2.4:1 widescreen format. It is available for around $286.

The 4.5 rating from 366 buyer ratings provides a significant signal of user satisfaction for this specific cinema lens.

Skip it if: You require a native PL mount for professional cinema rigs or need a lens that supports a wider field of view than the 37.5 mm equivalent provided by the 1.33X squeeze.