



Viltrox PFU RBMH 20mm f/1.8 ASPH Lens for Sony E
Featuring an expansive field of view and a vibrant design, the PFU RBMH 20mm f/1.8 ASPH by Viltrox is an ultra-wide prime lens tailored for Sony E-mount mirrorless cameras. The wide-angle configuration and rapid f/1.8 maximum aperture render it particularly suitable for astrophotography, as well as for landscape, interior, and architectural photography. Its optical architecture includes a collection of aspherical and low dispersion elements, which mitigate spherical and chromatic aberrations, resulting in sharp, well-corrected images with precise color reproduction. An HD Nano multi-layer coating has also been applied to minimize flare and ghosting, enhancing contrast when shooting in bright lighting conditions. The lens features a manual focus mechanism, allowing for focus on subjects as close as 9.8 inches, and its 14-blade diaphragm enhances the quality of bokeh. Furthermore, it is constructed from brass, ensuring durability and smooth functionality.
- Ultra-wide prime is designed for full-frame Sony E-mount mirrorless cameras; however, it can also be used with APS-C models where it provides a 30mm equivalent focal length.
- Bright f/1.8 maximum aperture suits working in difficult lighting conditions and also offers increased control over depth of field.
- Four extra-low dispersion elements, one double-sided aspherical element, and one element made from highly transparent glass all contribute to reducing a variety of aberrations in order to produce a well-corrected image with accurate color and high sharpness.
- HD Nano multi-layer coating has been applied to individual elements to reduce flare and ghosting for improved contrast. Also, this coating is water resistant to help protect the exposed surfaces from moisture.
- Manual focus design, with a 148.5° focus throw, permits working with subjects as close as 9.8" away.
- Engraved focus distance and depth of field scales benefit working with prefocus and hyperfocal focusing techniques.
- A 14-blade diaphragm contributes to a pleasing bokeh quality.
- Brass lens barrel construction realizes a physically durable design that also affords smooth operation.
- Included lens hood helps to prevent flare and also affords some protection to the bulbous front element. Additionally, a filter adapter ring is included for mounting 82mm screw-in filters.
Lens |
|
|---|---|
| Focal Length | 20mm |
| Aperture | Maximum: f/1.8 Minimum: f/16 |
| Lens Mount | Sony E |
| Lens Format Coverage | Full-Frame |
| Minimum Focus Distance | 9.84" / 25 cm |
| Magnification | 1:8 Macro Reproduction Ratio 0.12x Magnification |
| Optical Design | 12 Elements in 9 Groups |
| Aperture/Iris Blades | 14 |
| Focus Type | Manual Focus |
| Image Stabilization | No |
| Filter Size | 82 mm (via Included Adapter) |
| Dimensions | ø: 3 x L: 4.1" / ø: 76.8 x L: 104 mm |
| Weight | 1.7 lb / 782 g |









