The previously reported DK-Optic CHIARO 75mm f/1.9 lens for Leica M-mount, based on the Dallmeyer “Super Six” 3-inch f/1.9 design from the late 1930s, is now available for purchase on eBay from the reputable Japanese retailer Shotenkobo:
This limited edition run includes 300 pieces, featuring a classic optical design and rare NOS glass (250 lenses with blue coating and 50 lenses without coating). Additional informtion on the lens can be found here and here:
| Compatible mounts | Leica M | Minimum focusing distance | 0.7m |
|---|---|---|---|
| Compatible imaging screen size | 35mm full frame | filter diameter | 49mm |
| focal length | 75mm | size | Approximately Φ58×82mm |
| Lens configuration | 4 groups 6 elements | mass | Approximately 340g |
| focus | MF (Manual Focus) *Rangefinder-coupled | accessories | 49mm protective filter, lens hood, hood cap, rear cap |
| Aperture / Aperture blades | F1.9-F16 / 16 blades | Manufacturer’s warranty | 2 years (covers natural failures) |
Based on the optical design of the Dallmeyer “Super Six” 3-inch F1.9, this lens employs a 4-group, 6-element configuration that faithfully follows the original. More than just an homage that mimics the appearance and feel, this lens aims to revive the tonal characteristics, three-dimensionality, and bokeh that blend seamlessly into the background—all hallmarks of classic lenses—using modern precision machining and assembly techniques. To pursue the original optical characteristics, the optical system utilizes large-diameter NOS (New Old Stock) optical glass manufactured decades ago. By combining vintage optical materials with modern manufacturing technology, it pursues the unique light texture and tonal expression characteristic of classic lenses.
The combination of a 75mm medium telephoto angle of view and a wide aperture of F1.9 allows you to maintain a suitable distance from your subject while enjoying a sense of depth that makes the subject appear to float above the background. At wide open aperture, it produces soft tonal gradations and rich bokeh, while in backlit situations, it exhibits characteristic flare and light diffusion. Stopping down the aperture results in a more refined image with improved contrast and sharper outlines. The 16 aperture blades are designed to maintain a nearly circular bokeh shape even when stopped down.
The minimum focusing distance is 0.7m, and it is compatible with Leica M rangefinder coupling. You can enjoy a wide range of photography, such as portraits and snapshots, while taking advantage of the original Leica M shooting style. It can also be used with 44x33mm format image sensors.
*When using a 44x33mm format sensor, slight vignetting and light falloff will occur around the edges of the image. Please crop as needed.
The lens barrel is made of high-strength, lightweight 7075 aluminum alloy, while the main parts of the focus helicoid and aperture mechanism use CNC-machined brass components. Leveraging the precision machining and assembly techniques cultivated by DK-Optic in cine lens manufacturing, the lens achieves both rigidity and smooth focusing operation while incorporating a large-aperture optical system. The result is a classic and refined design that harmonizes beautifully with M-type Leica cameras.
The blue-coated version retains the soft rendering characteristic of classic lenses while enhancing color reproduction and contrast. The non-coated version is suitable for those who want to actively incorporate flare, light diffusion, and contrast changes in backlit situations into their photography. While sharing the same optical design, you can choose between two specifications to suit your lighting preferences and desired rendering style.
55mm diameter lens filters can be attached not only to the front of the lens (49mm diameter) but also inside the lens hood. Please note that the inside of the hood is narrow, so exercise caution when attaching or removing filters. Also, depending on the thickness of the filter frame, it may interfere with the hood and cannot be attached. Please use thin-frame filters.
Use coupon code DKOPTIC202607 for $100 off on the official DK-Optic website.
DK-Optic lenses are also sold on eBay.
