Voigtlander Sony E Prime

Ultron 20mm f/3.5 SL

20mm
f/3.5
Prime

Quick answer

The Voigtlander Ultron 20mm f/3.5 SL is a ultra-wide prime lens covering 20mm at f/3.5 for the Sony E mount. Its moderate maximum aperture works best in good light or with a higher ISO.

About this lens

Voigtlander Ultron 20mm f/3.5 SL: a wide-angle prime lens with a 20mm focal length and a maximum aperture of f/3.5, made for Sony E mount cameras. The wide view suits landscapes, architecture and environmental shots.

Voigtlander Ultron 20mm f/3.5 SL specifications

Brand: Voigtlander
Mount: Sony E
Focal length: 20mm
Maximum aperture: f/3.5
Lens type: Prime

What can you shoot with the Voigtlander Ultron 20mm f/3.5 SL?

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

Landscapes and big skies
Architecture and interiors
Astrophotography and night skies

Its moderate maximum aperture works best in good light or with a higher ISO.

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 Voigtlander Ultron 20mm f/3.5 SL use?

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

What is the focal length of the Voigtlander Ultron 20mm f/3.5 SL?

It is a fixed 20mm lens with a maximum aperture of f/3.5. That makes it a ultra-wide lens.

Is the Voigtlander Ultron 20mm f/3.5 SL 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/3.5.

What is the Voigtlander Ultron 20mm f/3.5 SL 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.