Viltrox Sony E Prime

PFU RBMH 20mm f/1.8 ASPH

20mm
f/1.8
Prime

Quick answer

The Viltrox PFU RBMH 20mm f/1.8 ASPH is a ultra-wide prime lens covering 20mm at f/1.8 for the Sony E mount. Its fast maximum aperture helps in dim light and gives good subject separation.

About this lens

A 20mm f/1.8 fast wide-angle prime lens, the Viltrox PFU RBMH 20mm f/1.8 ASPH is designed for Sony E mount bodies, with aspherical elements. The wide view suits landscapes, architecture and environmental shots.

Viltrox PFU RBMH 20mm f/1.8 ASPH specifications

Brand: Viltrox
Mount: Sony E
Focal length: 20mm
Maximum aperture: f/1.8
Lens type: Prime
Format coverage: full-frame
Optical construction: 12 elements in 9 groups

Specification source: viltrox.com

What can you shoot with the Viltrox PFU RBMH 20mm f/1.8 ASPH?

At 20mm this is a ultra-wide prime, which typically suits:

Landscapes and big skies
Architecture and interiors
Astrophotography and night skies

Its fast maximum aperture helps in dim light and gives good subject separation.

Full-frame equivalent and field of view

Calculated from the focal length and crop factor. Not measured.

Sensor	Crop	Equivalent	Horizontal FOV	Diagonal FOV
Full frame	1.0x	20mm	84°	94.5°
APS-C	1.5x	30mm	61.9°	71.6°

Try the field-of-view calculator

Frequently asked questions

What mount does the Viltrox PFU RBMH 20mm f/1.8 ASPH use?

It uses the Sony E mount, so it fits Sony E cameras directly.

What is the focal length of the Viltrox PFU RBMH 20mm f/1.8 ASPH?

It is a fixed 20mm lens with a maximum aperture of f/1.8. That makes it a ultra-wide lens.

Is the Viltrox PFU RBMH 20mm f/1.8 ASPH a prime or a zoom lens?

It is a prime lens with a fixed 20mm focal length. Primes usually open wider than zooms; this one opens to f/1.8.

What is the Viltrox PFU RBMH 20mm f/1.8 ASPH equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 30mm on full frame, with a 61.9° horizontal and 71.6° diagonal field of view. These figures are calculated from the focal length and crop factor.