DK-Optic Chiaro 3-inch(76mm) f/1.9 m

A Tribute to an Optical Legend 
Widely revered as the "Holy Grail" of mid-20th-century portrait and cinema photography, the Super Six 3-inch (76mm) f/1.9 needs no introduction among seasoned vintage lens connoisseurs. In its era, it represented the absolute pinnacle of immense light-gathering, a massive image circle, and ultimate spatial separation. Its magical ability to seemingly "carve" the subject straight out of the background creates an atmosphere that remains as highly coveted today as it was decades ago. Driven by pure passion, DK-Optic has flawlessly resurrected this masterpiece, combining its vintage soul with the extreme precision of modern industrial manufacturing.

Pure Optical Recreation
 We engineered a 1:1 true-to-original restoration without any clinical modern "additives." We have faithfully reconstructed the massive glass elements of this classic medium-telephoto, strictly adhering to its legendary 6-elements-in-4-groups optical configuration.

Signature Rendering & Character 
Rejecting the sterile, dry perfection of modern optics. As a 76mm ultra-fast lens, shooting wide open at f/1.9 delivers an astounding level of 3D subject isolation (often described as "cutting through air") alongside its signature, highly painterly bokeh. Under backlit conditions, it produces rich, cascading "peacock feather" flares. Yet, as you stop down the aperture, the image rapidly builds contrast, transforming the lens into a flawless, razor-sharp portrait weapon.

Cinematic-Grade Artisanal Construction 
Leveraging our high-end cinema lens production capabilities, every mechanical and optical component is designed and hand-assembled in our bespoke optical workshop. Even with the massive glass volume required for a 3-inch lens, our cine-grade mechanical structures guarantee an incredibly smooth, buttery focusing experience.

Silver Chrome Edition & Mechanics: 
The main exterior barrel is crafted from high-strength 7075 aerospace-grade aluminum to significantly reduce weight. The core focusing helicoid and aperture mechanics are CNC 5-axis machined from aerospace-grade brass, providing an unparalleled, robust, heavy-duty mechanical feel.

Vintage Optics: 
We utilize large-diameter, decades-old New Old Stock (NOS) optical glass to perfectly replicate the exact refractive index and the dense, luminous clarity of the original vintage elements.

Specifications

Focal Length: 76mm (3 inch)

Format Coverage: 135 Full Frame (Note: The massive image circle of this lens comfortably covers 645 Medium Format sensors)

Optical Design: 6 Elements in 4 Groups

Minimum Focusing Distance: 0.7m (Perfectly coupled for rangefinder systems)

Aperture Control: Manual preset (Dampened and calibrated to cinema-grade standards)

Aperture Range: f/1.9 – f/11

Aperture Blades: 16 blades (Ensuring a perfectly circular bokeh at all stops)

Lens Mount: Native Leica M-Mount

Filter Thread: [Please insert filter size here, e.g., 58mm] (Note: This was left blank in your Chinese text)

Lens Hood: Detachable threaded metal hood

Dimensions & Weight

Length (Mounted on camera): 91mm

Maximum Diameter: 62mm

Weight: 364g (Brass/Aluminum hybrid construction, excluding caps)

In the Box

DK-Optic Chiaro 3-inch f/1.9 Lens

Precision-machined Full Metal Front Cap

Vintage-style Metal Lens Hood

Custom DK-Optic Bamboo Presentation Box

Certificate of Authenticity with Individual Serial Number

1-Year Official DK-Optic Warranty

Shipping & Logistics

Global Shipping Hub: China (Shenzhen / Hong Kong)

Please Note: Because DK-Optic adheres to the highest standards of manual assembly and meticulous optical calibration, the initial pre-order batch and special edition kits may require a slightly longer production cycle. Standard orders are shipped via DHL, UPS, or FedEx, with an estimated global transit time of 7–14 business days. In the event of production-related delays, our dedicated customer service team will proactively contact you via email.