Simera 21mm f/1.4 Manual Camera Lens M Mount
Simera 21mm f/1.4 Manual Camera Lens M Mount
ASPH Full Frame
Manual Lens Specifications
13 elements in 11 groups
14-blade cinema-grade aperture
0.7m focus limits
Net weight: 428g
Manual Lens Details
1/9
Simera 21mm f/1.4 Manual Camera Lens M Mount
Simera 21mm f/1.4 Manual Camera Lens M Mount
ASPH Full Frame
Manual Lens Specifications
13 elements in 11 groups
14-blade cinema-grade aperture
0.7m focus limits
Net weight: 428g
Manual Lens Details

Simera 21mm f/1.4

$999.00 USD
$999.00 USD
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  • 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
Color: Black
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We expect to ship within 7 days, with the exact delivery time varying depending on your location.

Shipping cost and timeliness.
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These charges are determined by the customs authorities of the destination country and are not included in our product prices or shipping costs.
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  • 12 Month Warranty

Optical Precision, Pure and Vivid Imagery

Featuring 2 ASPH., 3 high-index, and 3 ED elements, along with a floating element design to minimize chromatic aberration and distortion even at f/1.4. The lens delivers edge-to-edge sharpness and resolves fine detail even on 60MP sensors.

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.

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.

Weighing only 428g, the Simera 21mm f/1.4 is the lightest in its category, offering an exceptional balance between performance and portability.
The specially designed ultra-wide lens hood allows quick mounting and folding, offering a smooth and comfortable handling experience.

Accessories

Shot on Simera 21mm

Customer Reviews

Based on 4 reviews
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J
Jean baptiste

Perfect

J
Jtfilm

I’ve been waiting for a wide angle fast M lens and this did not disappoint. Very well made and good attention to detail. Smooth focus ring and nice click on the apertures. Plus it looks great on my M3. Not had chance to process some film I shot but have high hopes it will be as good as this lens looks. Overall for the price point looks like a keeper. Bravo

P
Philip Partridge

As the latest DZO/Thypoch photography lens in the Simera range, the 21/1.4 stays true to both the character of the Simeras and the cine heritage of the parent company. It features outstanding build quality; well-balanced spatial frequencies in its striking imagery; smoothed content in its bokeh field from the 14-blade iris; warm rich tones inside a lively colour palette; and fine optical correction of the serious aberrations (CA, distortion, spherical aberration) for those of us who dislike profile dependency.
With a class-leading minimum focus of 0.23 metres, this lens is optimised for close focus, with a robust floating element system and great dimensionality from its carefully designed focus fade. Unlike most 21mm lenses, it offers greater utility for people and general photography courtesy of its large and very well-finished bokeh balls and linear focus fade – these all add up to true-to-life imagery from wide open, with no harsh ‘digital’ edges. It’s an ‘image-first’ lens.
The 21mm is a pleasure to use and will complement the forthcoming EVF Leica M models as well as the mainstream brands’ EVF cameras. The focus throw is fast enough for street work, with a well-graded rotation at the close focus end of the very smooth focus ring. The compressed small aperture scaling assists in visual use of the aperture ring. The DOF red dots field effectively separates the two working rings. The fast action bayonet fit Aluminium hood is solid and fits firmly, and the hood cap is a nice touch.
It’s usability, versatility and vivid imagery will make it a firm favourite for wide angle aficionados, and it is one of the best-looking lenses in a crowded market. It even comes carefully packed in a beautiful gift box. This horizon expanding lens is Highly Recommended.

S
Schmid

Great quality and not too heavy.

Simera Series FAQ

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?

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?

There are no electroniccontacts on Simera lenses. They are manual 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?

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.