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Sigma 85mm f/1.4 DG DN A (Art) Full-Frame Autofocus Lens for Sony E-Mount, Black {77}
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$980.00
Sigma 85mm f/1.4 DG DN Art: the mirrorless portrait standard
Sigma built the 85mm f/1.4 DG DN Art from the ground up for mirrorless, and the difference from adapted DSLR glass shows immediately. At 625g and 96.1mm long, it carries like a mid-size prime than a fast telephoto, and the magnesium alloy body with weather sealing means it handles real shooting conditions. The 77mm filter thread is standard kit for most photographers, so no adapters to hunt down.
Optically, the 15-element, 11-group design relies on one aspherical element and five SLD glass elements to control axial chromatic aberration at f/1.4. Color fringing in open-aperture portraits is where many fast lenses stumble; Sigma addressed it directly in the optical formula than leaving it to post-processing. The 11-blade rounded diaphragm shapes the out-of-focus areas, and at 85mm with a minimum focus distance of 0.85m, subject separation at f/1.4 is pronounced without any engineering tricks.
The stepper motor AF communicates cleanly with Sony's phase-detection and face/eye-detection systems, which matters for portrait work where the camera is tracking a moving subject than locking onto a static target. An aperture ring with a lock switch, a physical AF/MF switch on the barrel, and a programmable AFL button round out the control layout. For a lens that sits at the center of most portrait shooters' bags, the functional hardware controls are.
Who It's For
Portrait photographers shooting Sony full-frame bodies get the obvious use case: 85mm compression, f/1.4 subject isolation, and AF that works with eye-detection than fighting it. Event and wedding photographers will appreciate the weather sealing and the physical aperture ring, which allows quick exposure adjustments between indoor and outdoor setups without diving into menus. Documentary and street photographers who want a flattering short telephoto for environmental portraits will find the 625g weight manageable for all-day carry. Theater and performance shooters benefit from the f/1.4 aperture in low available light where flash is prohibited.
Key Features
- 85mm f/1.4 prime with 11-blade rounded diaphragm for smooth bokeh
- 15-element, 11-group optical design with 1 aspherical + 5 SLD elements
- Stepper motor AF optimized for Sony phase-detection and face/eye-detection
- Weather-sealed magnesium alloy body, 625g, 96.1mm length
- 0.85m minimum focus distance with full-time manual focus override
- Aperture ring with lock switch, AF/MF barrel switch, programmable AFL button
- 77mm filter thread with lens hood included
FAQ
- How does the stepper motor AF perform with Sony's face/eye detection?
- The stepper motor is optimized for both phase-detection and contrast AF, so it communicates cleanly with Sony's face/eye systems. For portrait work where you're tracking a moving subject, the AF locks in fast and holds consistent.
- Will there be color fringing wide open at f/1.4?
- Sigma engineered this specifically: one aspherical element and five SLD glass elements control axial chromatic aberration at f/1.4. You won't need post-processing to fix color bleeding in open-aperture portraits.
- How compact is this compared to adapted DSLR 85mm f/1.4 lenses?
- At 625g and 96.1mm long, it's built for mirrorless from the ground up. You're carrying a mid-size prime, not a fast telephoto. The magnesium alloy body handles real shooting conditions with weather sealing.
- What's the minimum focus distance, and does subject separation feel natural at f/1.4?
- 0.85m minimum focus distance. At 85mm with f/1.4, subject separation is pronounced without any optical tricks. The 11-blade rounded diaphragm shapes the bokeh smoothly.
- Does the aperture ring have a lock?
- Yes. There's a lock switch on the aperture ring to prevent unintended changes during shooting, plus a physical AF/MF switch on the barrel and a programmable AFL button.
- Is full-time manual focus override available?
- Yes. You can focus manually at any time without switching modes, and internal focusing means the barrel doesn't extend during focus breathing.
- What filter size do I need?
- 77mm. That's standard kit for most photographers, so no hunting for adapters.
| Specification | Value |
|---|---|
| Focal Length | 85mm |
| Max Aperture | f/1.4 |
| Min Aperture | f/16 |
| Mount | Sony E |
| Stabilization | No |
| AF System | Yes |
| Filter Size | 77 mm |
| Lens Type | Prime |
| Elements | 15 |
| Groups | 11 |
| Diaphragm Blades | 11 |
| Angle Of View | 28.6° |
| Minimum Focus Distance M | 0.85 |
| Maximum Magnification | 0.12x |
| Weight | 625 g |
| Length | 96.1 mm |
| Diameter | 82.8 mm |
| Motor Type | Stepper motor |
| Full Time Manual | Yes |
| Focus Method | Internal |
| Aperture Ring | Yes |
| Distance Scale | No |
| DOF Scale | No |
| Special Elements Coatings | 1 aspherical + 5 SLD elements |
| Materials | Magnesium alloy |
| Weather Sealing | Yes |
| Color | Black |
This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.
| Brand Name | Sigma |
|---|---|
| Filter Size | 77mm |
| Focus Type | Autofocus (lens motor) |
| Lens Mount | Sony E Mount |
| Lens Type | Short Tele / Portrait |
| Max Focal Length | 85mm |
| Min Focal Length | 85mm |
