Overview
Ideal for landscape photography and portrait close-ups, the Simera 21mm f/1.4 lens features a 14-blade aperture for smooth bokeh and defined starburst highlights. With multiple special elements including 2 aspherical lenses, 3 ED lenses, and 3 HRI lenses, this lens offers clean, rounded bokeh with no onion ring artifacts and low chromatic aberration even at maximum aperture.
The lightweight build of just 427g makes it ideal for compact setups, while the selectable aperture ring with both clicked and de-clicked modes allows for hybrid use. The high-performance optics of 13 elements in 11 groups, including aspherical, high-refractive index, and extra-low dispersion glass, ensure excellent distortion control for accurate wide-angle rendering, making it a versatile choice for photographers seeking sharp, true-to-life images with minimal aberrations.
Summary
Focal Length: 21mm
Max Aperture: F1.4
Lens Format: Full Frame
Lens Type: Prime
Lens Mount: Leica M
Filter Thread: 62mm
Scale:
Imperial
Metric
Included in box
1x Lens
1x Lens Hood
1x Front Cap
1x Rear Cap
1x Warranty Card
Simera 21mm f/1.4 brings the wide-angle perspective into the Simera series, combining an expansive field of view with careful optical refinement. Its optical formula includes 2 aspherical, 3 high-refractive index, and 3 extra-low dispersion elements that work together to suppress chromatic aberration and distortion across the frame, ensuring sharp, true-to-life rendering from edge to edge.
With an ultra-short minimum focusing distance of 0.23m, photographers can approach subjects closely while preserving a strong sense of environment, ideal for storytelling and dynamic composition. The fast f/1.4 aperture ensures excellent low-light performance and smooth tonal transitions, while the 14-blade iris produces soft, rounded bokeh with minimal onion ring artifacts.
True to the Simera series, this lens features the subtle tactile resistance at 0.7m that marks the effective rangefinder coupling limit, supporting intuitive focus confirmation in dynamic scenes. The Clicked and de-clicked aperture ring accommodates smooth transitions between stills and video, while the classic automatic depth-of-field indicator aids quick visualization of focus zones.
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 favoured 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.
