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Thypoch DZO Simera 21mm f1.4 Leica M Mount Black
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| Lens mount | Leica M |
| Lens Format Coverage | Full Frame |
| Lens Design | Prime Lenses |
| Lens focus length, mm | 21 |
| Focus Type | Manual Focus |
| Image Stabilization | No |
| Lens type | wideangle |
| Filter size | 52mm |
| Maximum Aperture | f/1.4 |
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Thypoch DZO Simera 21mm f/1.4 for Leica M Mount
The Simera 21mm f/1.4 lens offers a wide-angle perspective with a wide field of view and precision optical design, tailored for full-frame cameras with Leica M mount. It is finished in black.
Originally part of the Simera-C film series, this photographic version with an M bayonet maintains the same film-quality standards. It features a 14-lamel aperture that preserves a perfectly circular aperture shape from f/1.4 to f/16. Precision-molded and polished aspherical elements effectively eliminate unwanted bokeh artifacts such as onion ring
and donut
effects, delivering clean and natural light transitions.
Optical Construction
The lens comprises 13 optical elements in 11 groups, including 2 aspherical elements, 3 high refractive index (HRI) elements, and 3 low dispersion (ED) elements, along with a floating lens group. This design ensures minimal chromatic aberration and near-zero distortion even at maximum aperture, providing exceptional resolution across the entire image area from center to edges.
Performance and Handling
Weighing only 427 grams, it is the lightest full-frame 21mm f/1.4 lens in its class, balancing high performance with portability. It is ideal for landscape, documentary, and street photography, delivering a cinematic visual experience and exceptional narrative depth rarely found in this category.
The lens offers an exceptionally short minimum focusing distance and outstanding optical performance at full aperture, making it a versatile and inspiring tool for capturing everyday moments.
Bokeh and Depth Rendering
At f/1.4, the lens produces a subtle and natural transition between sharp and out-of-focus areas in both foreground and background, closely mimicking the human eye's perception of depth. This characteristic imparts an immersive, cinematic quality to images, which is uncommon in ultra-wide-angle lenses.
Key Features
- Ideal for landscape photography and close-up portraits
- 14-lamel aperture for subtle bokeh and distinctive starlight effects
- Special optical elements: 2 aspherical lenses, 3 ED lenses, 3 HRI lenses
- Clean, smooth bokeh without
onion rings
- Low chromatic aberration even at maximum aperture (f/1.4)
- Excellent distortion control for precise wide-angle images
- Lightweight design - only 427 g
- Optional aperture ring with lock and smooth operation, suitable for video
- High-end optics with 13 elements in 11 groups, including a floating group and a combination of aspherical, HRI, and ED glass
