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Sony FE 20mm f/1.8 G Full-Frame Autofocus Lens for E-Mount, Black {67} SEL20F18G
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$741.00
Sony's 20mm f/1.8 G: ultra-wide prime built for serious work
At 20mm with a 94° field of view and f/1.8 maximum aperture, this lens occupies an useful gap in the Sony G lineup, wide enough for architecture and interiors without the distortion penalty of a fishy ultra-wide, fast enough to shoot in low light without pushing ISO into noise territory. The optical formula runs 14 elements across 12 groups, with two aspherical elements controlling distortion and three ED elements keeping chromatic aberration in check. Nano AR Coating handles flare and surface reflections, which matters when you're shooting into windows or under mixed artificial light.
The dual XD Linear Motor AF system is fast and near-silent, which makes this lens as useful for video as for stills. Internal focusing keeps the front element stationary, so polarizers and graduated ND filters don't rotate mid-shoot. Minimum focus distance lands at 18cm with 0.22x maximum magnification, not a macro substitute, but close enough to give foreground subjects real presence in a wide composition. At 373g and 84.7mm long, it fits in a jacket pocket alongside a body. The aperture ring is clickless-switchable for smooth video exposure pulls. Weather sealing means it stays in the bag for rain and dust without hesitation.
Who It's For
Landscape photographers get a 94° field that takes in expansive skies and foregrounds, paired with f/1.8 for dawn and dusk shooting without a tripod. Architectural and interior shooters benefit from the distortion control delivered by two aspherical elements, critical when straight lines fill the frame. Travel and documentary photographers will appreciate the 373g weight and weather sealing on shoots where the kit has to be light and resilient. Videographers working handheld or on a gimbal get near-silent AF and a clickless-capable aperture ring in a form factor that doesn't tax a rig.
Key Features
- 20mm f/1.8 prime with 94° ultra-wide field of view
- 14 elements across 12 groups with 2 aspherical and 3 ED elements
- Dual XD Linear Motor AF system with full-time manual focus override
- Internal focusing keeps front element stationary for filter use
- Clickless-switchable aperture ring for smooth video exposure pulls
- Weather-sealed design with fluorine coating and 67mm filter thread
- Minimum focus 18cm with 0.22x magnification
- Compact 373g, 84.7mm length fits jacket pocket
FAQ
- What makes the 20mm f/1.8 G different from a standard ultra-wide like the 16-35mm f/4?
- At 20mm you get f/1.8 speed without the bulk or distortion of a 16mm. It's wide enough for architecture and interiors but straight enough to use without correction in post. The speed lets you shoot handheld in mixed light without grinding your ISO.
- How close can you focus, and is this lens useful for detail work?
- Minimum focus is 18cm with 0.22x magnification. Not macro territory, but close enough to pull foreground subjects into sharp focus within a wide composition. Useful for environmental portraits where you want both the subject and the space around them.
- Does the aperture ring have clicks, and how does that affect video?
- The ring is clickless-switchable, meaning you can disable the detents and pull exposure smoothly during video without audible steps. Essential if you're pulling focus or exposure for motion work.
- Is the autofocus silent enough for run-and-gun video?
- The dual XD Linear Motor system is near-silent and fast. Internal focusing means the front element doesn't rotate, so you can leave a polarizer or ND filter on without it changing density mid-shot.
- What's the weather sealing like on this lens?
- It's sealed against dust and moisture with a fluorine coating on the front element. Won't survive a hose-down, but it handles rain and incidental splash without hesitation. Keep it in the bag during weather without worry.
- How much space does this take up in a bag?
- 373g and 84.7mm long. It fits in a jacket pocket alongside a body. At that weight and length, it's realistic to carry as a second wide lens or keep as a permanent kit lens.
- What optical elements control distortion and chromatic aberration?
- Two aspherical elements handle barrel distortion. Three ED (extra-low dispersion) elements control chromatic aberration across the frame. Nano AR Coating cuts surface reflections and flare, which matters at 94° when shooting into windows or mixed light.
| Specification | Value |
|---|---|
| Focal Length | 20mm |
| Max Aperture | f/1.8 |
| Min Aperture | f/22 |
| Mount | Sony E |
| Stabilization | No |
| AF System | Yes |
| Lens Type | Prime |
| Lens Format | Full Frame |
| Angle Of View | 94° |
| Elements | 14 |
| Groups | 12 |
| Special Elements Coatings | 2 Aspherical, 3 ED elements, Nano AR Coating |
| Motor Type | Dual XD Linear Motor |
| Full Time Manual Focus | Yes |
| Focus Method | Internal |
| Minimum Focus Distance | 18 cm |
| Maximum Magnification | 0.22x |
| Filter Thread | 67 mm |
| Aperture Ring | Yes |
| Distance Scale | No |
| DOF Scale | No |
| Weather Sealing | Yes |
| Color | Black |
| Length | 84.7 mm |
| Diameter | 73.5 mm |
| Weight | 373 g |
| Weight Oz | 13.16 |
| Package Weight | 1.45 lb |
| Box Dimensions | 7.7 x 4.6 x 4.5 |
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 | Sony |
|---|---|
| Filter Size | 67mm |
| Focus Type | Autofocus (lens motor) |
| Lens Mount | Sony E Mount |
| Lens Type | Ultrawide |
| Max Focal Length | 20mm |
| Min Focal Length | 20mm |
