Sigma Cine 40mm T1.5 FF Lens - Sony Mount
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Wex Photo VideoSigma 40mm T1.5 FF Cine Prime Lens - Sony Mount
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Product Information
Full details
The Sigma Cine 40mm T1.5 FF Lens is designed for professional cinematographers and videographers who require exceptional optical clarity for 6K-8K digital film productions. Its primary strength lies in its ability to deliver a bright T1.5 aperture, providing superior performance in low-light environments and a highly artistic shallow depth of field. A notable caveat for prospective users is that this is a manual-focus lens, which may require additional focus-pulling support or experience in high-paced run-and-gun environments.
All features
| Brand | SIGMA CORPORATION OF AMERICA |
|---|
Extended Product Information
FAQs
Is this lens compatible with crop-sensor cameras?
Yes, it is designed for full-frame but will function on crop-sensor (APS-C) bodies, though it will result in a narrower field of view equivalent to roughly 60mm.
Does this lens have built-in image stabilization?
No, this is a cinema lens, and it relies on the camera body's stabilization or external support rigs for steady shots.
Can I use this lens for photography?
Yes, it functions on any Sony E-mount camera; however, it is manual focus and lacks electronic communication for autofocus.
Are the focus gears compatible with industry-standard follow focuses?
Yes, the lens features industry-standard 0.8 module gears for universal compatibility.
How do I maintain the lens optics?
Keep the front and rear elements capped when not in use and clean only with professional lens cleaning solutions and a soft microfiber cloth.
Does the lens suffer from focus breathing?
Sigma Cine lenses are engineered to minimize focus breathing, making them ideal for professional cinematography where rack focus is required.
Troubleshooting
Focus ring feels stiff or inconsistent
Ensure the follow-focus gears are properly aligned and not applying excessive pressure to the barrel.
Image appears soft at T1.5
Verify critical focus using focus peaking or an external monitor, as the depth of field at T1.5 is extremely narrow.
Lens will not mount to the camera body
Check the mount pins for debris and ensure the lens is aligned correctly with the camera's indexing dot.
Pros and Cons
Pros
- Exceptional optical quality for ultra-high-resolution 6K-8K sensors
- Bright T1.5 aperture excels in challenging lighting conditions
- Consistent color balance across the lens range simplifies color grading
- Durable, all-metal construction suitable for heavy-duty use
- Standardized front diameter simplifies accessory mounting
Cons
- Manual focus only, which can be challenging for solo operators
- Larger and heavier than consumer-grade lenses due to high-end build
- Requires professional rig support for optimal handling
Setup, Compatibility & Care
To ensure optimal performance, verify that your camera's sensor settings are configured for the appropriate resolution and crop factor. Use the 95mm front diameter to attach your matte box securely; if you are using screw-on filters, the lens features a standard 82mm filter thread. When attaching the lens to the Sony mount, ensure the locking mechanism is fully engaged to prevent any play. Regarding care, always keep the lens in a protective, padded case when not in use. Use a blower to remove loose dust from the front element before using a microfiber cloth. Avoid cleaning the lens in humid conditions, and ensure the lens elements are completely dry before capping for storage.