Simera 21mm f/1.4
- The Simera 21mm f/1.4 ASPH is a breakthrough in ultra-wide-angle, large-aperture lens design.
- With 13 elements in 11 groups, including advanced special elements and high-precision aspherical lenses, it achieves an impressive minimum focus distance of 0.23m.
- The 21mm focal length is a favorite in cinematic storytelling, known for its ability to show expansive spaces or dramatic details.
- Net weight: 428g
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Simera Series
Thypoch Simera offers a new way of seeing, a window into the present. Like a portal, it transports us beyond the constraints of the ordinary, revealing a world of hidden grandeur and subtle majesty.
A focal length tribute to motion picture
The Simera 21mm f/1.4 ASPH redefines ultra-wide, large-aperture lens design. A decade after the first 21mm f/1.4, it pushes the boundaries with 13 elements in 11 groups, including high-precision aspherical glass, achieving a close focus of just 0.23m.
Its floating design delivers smooth separation, soft bokeh, and near-zero distortion. From edge-to-edge sharpness to rich low-light textures, it blends wide perspectives with fine detail—perfect for storytelling.
Beloved in cinema for its immersive yet surreal look, the 21mm focal length now comes in a 428g full-frame lens built for creative freedom—from grand vistas to intimate close-ups.
Optical Precision, Pure and Vivid Imagery
With its f/1.4 aperture, the lens excels in low light and creates smooth transitions between highlights and shadows. Precision-crafted aspherical elements eliminate distracting “onion ring” and “donut” bokeh, ensuring a clean image. The 14-blade cinema-grade aperture produces beautifully rounded, dreamy bokeh that adds an artistic and unique touch to the images.
With its f/1.4 aperture, the lens excels in low light and creates smooth transitions between highlights and shadows. Precision-crafted aspherical elements eliminate distracting “onion ring” and “donut” bokeh, ensuring a clean image. The 14-blade cinema-grade aperture produces beautifully rounded, dreamy bokeh that adds an artistic and unique touch to the images.
Immersive Perspective,Expansive and Expressive
The 21mm has long been favored by filmmakers for its calm yet slightly surreal atmosphere. Its wide-angle perspective not only adds strong spatial depth to the frame but also creates a “cognitive distancing effect” when capturing close-up portraits. This allows both the environment and fine details to be expressed naturally.
The f/1.4 aperture offers a shallow depth of field that mimics the natural separation of the human eye at medium distances. At its minimum focusing distance of 0.23m, it achieves bokeh effects comparable to those of a 50mm f/1.4 lens at 0.55m. The near-90°diagonal field of view further enhances the sense of space in landscape photography and delivers strong visual impact. Whether capturing environmental portraits, close-up details, or sweeping vistas, this lens offers an immersive visual experience, adding narrative depth to every frame.
Lightweight and Versatile, Freedom in Creation.
Weighing only 428g, the Simera 21mm f/1.4 is the lightest in its category, offering an exceptional balance between performance and portability.
Designed for landscape, documentary, and street photography, it ensures effortless handling across various creative scenarios. The lens features a de-clickable aperture ring for seamless transitions between still and video shooting.
A tactile resistance point at 0.7m serves as a reminder for rangefinder focus limits.
The specially designed ultra-wide lens hood allows quick mounting and folding, offering a smooth and comfortable handling experience.
Accessories
Simera Series FAQ
Which models of UV filters are compatible with Simera series lenses?
Which models of UV filters are compatible with Simera series lenses?
The Simera 28/35/50mm lenses are compatible with φ49mm UV filters. When both the lens hood and the UV filter are installed, they can be compatible with thin UV filters with a maximum diameter of 51.4mm, such as the "MC UV series" of MECO. The Simera 75mm lens is compatible with φ58mm UV filters and allows to install mainstream UV filters together with the lens hood.
Can the focus tab of Simera series be disassembled?
Can the focus tab of Simera series be disassembled?
The focus tab cannot be disassembled. Since disassembling or assembling the focus tab involves the internal structure, it may damage the lens.
Do Simeralenses have electronic contacts?
Do Simeralenses have electronic contacts?
There are no electroniccontacts on Simera lenses. They are manual lenses.
How to adjust the stepped or stepless aperture function on Simera lenses?
How to adjust the stepped or stepless aperture function on Simera lenses?
When the lens is installed on the camera, toggle the block on the front of the lens. Toggle to the left, a moon symbol represents the lens is stepless ; and a sun symbol represents stepped aperture if toggling to the right.
How to convert the format when Simera lenses are used on APS-C cameras?
How to convert the format when Simera lenses are used on APS-C cameras?
The equivalent focal length = the focal length of the lens × the conversion coefficient. For example, when a 50mm lens is used on an APS-C camera, the actual perspective obtained is 50mm × the format conversion coefficient of APS-C cameras. Usually, the conversion coefficient of Sony and Nikon cameras is 1.5, and that of Canon cameras is 1.6.