Sigma Cine 20mm T1.5 FF Lens - Sony E-Mount
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Wex Photo VideoSigma Cine 20mm T1.5 FF Lens - Sony E-Mount
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Product Information
Full details
The Sigma Cine 20mm T1.5 FF Lens is designed for professional cinematographers and videographers who require exceptional optical clarity and full-frame coverage for high-end productions. Its standout benefit is the ultra-bright T1.5 aperture, which excels in low-light environments and produces a distinct, cinematic shallow depth of field. A significant caveat for users is that the lens is a fully manual focus tool with a robust, heavy build, making it unsuitable for run-and-gun operations that rely on fast autofocus systems.
All features
| Brand | Sigma |
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Extended Product Information
FAQs
Is this lens compatible with Sony mirrorless cameras?
Yes, it is specifically designed for the Sony E-mount and covers full-frame sensors.
Can I use autofocus with this lens?
No, this is a strictly manual focus cinema lens designed for professional production environments.
Does the aperture click when adjusted?
Cine lenses typically feature a de-clicked aperture ring for smooth transitions during recording.
What is the front diameter for filter mounting?
The lens has a standardized 95mm front diameter for matte box compatibility.
Can this lens be used for 8K recording?
Yes, the optics are engineered to resolve high-resolution sensors up to 8K.
Is it weather-sealed?
While robustly built for production, it is not officially rated as weather-sealed; avoid exposing it to heavy rain or dust storms.
Troubleshooting
Image appears soft at the edges
Ensure the lens is correctly seated in the camera mount and that no physical obstructions are blocking the rear element.
Focus ring feels stiff during operation
Check that the follow-focus gear is properly calibrated and not exerting excessive pressure on the focus barrel.
Flare or ghosting in bright environments
Utilize a proper matte box with flags or a lens hood to shield the front element from extraneous light sources.
Pros and Cons
Pros
- Exceptional low-light performance with T1.5 aperture
- Sharpness capable of resolving 6K-8K sensor data
- Durable all-metal construction for field longevity
- Standardized physical dimensions for matte box compatibility
- Consistent color rendering for easy post-production matching
Cons
- Manual focus only, not suitable for autofocus-dependent shooters
- Heavyweight design requires professional stabilization rigs
- Not compatible with electronic aperture control
- Larger footprint compared to standard mirrorless prime lenses
Setup, Compatibility & Care
- Mounting: Ensure your Sony E-mount camera body is securely attached to the cine-mount interface. Check that the lens locking mechanism is fully engaged.
- Matte Box Setup: Since the lens has a fixed 95mm front diameter, use a clamp-on matte box to prevent light leaks between the glass and the filter stage.
- Care: Store the lens in a temperature-controlled environment within a hard-shell, foam-lined cine case to protect the glass from dust and impacts.
- Cleaning: Only use lens-specific microfiber cloths and professional-grade optical cleaning solutions. Avoid touching the front element with bare fingers to prevent oil buildup.