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Panasonic Lumix S PRO 50mm f/1.4 Full-Frame Autofocus Lens for Mirrorless L-Mount, Black {77}
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$1,542.00
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Panasonic's Leica-certified 50mm f/1.4 built for L-Mount full-frame work.
The S PRO 50mm f/1.4 sits at the center of Panasonic's L-Mount prime lineup, and its optical architecture earns that position. Thirteen elements across 11 groups include two aspherical elements and three ED glass elements, keeping axial and lateral chromatic aberration in check across the full aperture range. The 11-blade diaphragm produces smooth, gradual defocus transitions than the harsh cutoff you see from cheaper glass, and that matters when your subject needs to breathe against an out-of-focus background.
The double focus system pairs a linear motor with a stepping motor, driving autofocus at sensor refresh rates up to 480 fps. That combination delivers fast acquisition and the kind of precise, repeatable focus positioning that video shooters and stills photographers working in low light both rely on. At f/1.4, you have real separation capability at 44 cm minimum focus distance. Dust, splash, and freeze resistance rounds out a build that holds up in the field than just on a studio table.
At 955 g and 130 mm long, this is not a small lens, but the weight reflects what Panasonic put inside it. Leica certification means the optics were tested against a standard most manufacturers don't submit to. For L-Mount shooters who want a 50mm that performs at f/1.4 instead of just opening to it, the S PRO delivers that without compromise.
Who It's For
Portrait photographers working with the Lumix S5 II or S1R will find the f/1.4 aperture and 11-blade diaphragm produce the separation and smooth defocus they need without reaching for a longer focal length. Documentary and event photographers benefit from the 480 fps autofocus drive speed and weather sealing, keeping up in low light and unpredictable conditions. Cinematographers shooting on L-Mount bodies get precise focus transitions from the stepping motor side of the dual-motor system. Landscape photographers pairing this with a high-resolution body like the S1R gain corner-to-corner correction from the ED and aspherical elements even at wide apertures.
Key Features
- 50mm f/1.4 full-frame L-Mount prime with Leica certification
- 13 optical elements across 11 groups with 3 ED and 2 aspherical elements
- Double focus system: linear motor plus stepping motor for 480 fps AF
- 11-blade circular diaphragm for smooth bokeh and defocus gradation
- Dust, splash, and freeze-resistant construction for field use
- 77mm filter thread, 44 cm minimum focus distance, 955 g weight
FAQ
- What autofocus system does this lens use?
- A double focus system combines a linear motor with a stepping motor, enabling autofocus at sensor refresh rates up to 480 fps for fast acquisition and precise focus positioning across stills and video work.
- How does the 11-blade diaphragm affect bokeh?
- The 11-blade circular aperture produces smooth, gradual defocus transitions rather than the polygonal shapes you get from fewer blades, making out-of-focus backgrounds blend seamlessly into your subject.
- Is this lens weather-sealed?
- Yes. The lens has dust, splash, and freeze resistance built into its construction, making it reliable in harsh field conditions.
- What optical elements reduce chromatic aberration?
- Three ED (extra-low dispersion) elements and two aspherical elements work together to suppress both axial and lateral chromatic aberration across the full aperture range.
- What does Leica certification mean?
- Leica certification means the optics were tested against Leica's quality standards, a testing protocol most manufacturers don't submit to. It's a guarantee of optical performance at f/1.4, not just the ability to open to it.
- What's the minimum focus distance and reproduction ratio?
- Minimum focus distance is 44 cm (1.44 ft) with a reproduction ratio of 1:6.666, giving you separation capability at f/1.4 without macro-level magnification.
- How much does this lens weigh?
- 955 g (2.10 lb). The weight reflects the optical glass inside-two aspherical elements, three ED elements, and 13 elements across 11 groups. It's not lightweight, but it's designed to perform rather than compromise at f/1.4.
| Specification | Value |
|---|---|
| Focal Length | 50mm |
| Max Aperture | f/1.4 |
| Min Aperture | f/16 |
| Mount | Leica L (L-Mount) |
| Lens Format | Full Frame |
| Angle Of View | 47° |
| Minimum Focusing Distance | 1.44 ft / 44 cm |
| Reproduction Ratio | 1:6.666 |
| Optical Groups | 11 |
| Optical Elements | 13 |
| Filter Thread | 77mm |
| Length | 5.12 in / 130 mm |
| Maximum Diameter | 3.54 in / 90 mm |
| Package Weight | 3.39 lb |
| Box Dimensions | 11.3 x 5.6 x 5.5 in |
| Weight | 2.10 lb / 955 g |
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 | Panasonic |
|---|---|
| Filter Size | 77mm |
| Focus Type | Autofocus (lens motor) |
| Lens Mount | Leica L-Mount |
| Lens Type | Standard / Normal |
| Max Focal Length | 50mm |
| Min Focal Length | 50mm |
