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7artisans Fujifilm X mount Ultra-wide prime

7artisans 4mm f/2.8

Quick answer

The 7artisans 4mm f/2.8 is a ultra-wide prime lens covering 4mm at f/2.8 for the Fujifilm X mount. Its bright maximum aperture handles indoor and evening light reasonably well.

Focal
4mm
Aperture
f/2.8
Min focus
0.09m
AF motor
None

What 4mm sees

APS-C crop 1.5× → 6mm
149° 143.1° horizontal

Diagonal angle of view. Frames drawn to scale at 4mm. Calculated from the focal length and crop factor, not measured.

Open the field-of-view calculator

7artisans 4mm f/2.8 specifications

Optics

Focal length
4mm
Maximum aperture
f/2.8

Focus

Autofocus motor
None
Minimum focus distance
0.09 m

General

Brand
7artisans
Mount
Fujifilm X
Lens type
Prime

Specification source: 7artisans.store

What can you shoot with the 7artisans 4mm f/2.8?

At 4mm this is a ultra-wide prime, which typically suits:

  • Landscapes and big skies
  • Architecture and interiors
  • Astrophotography and night skies

Its bright maximum aperture handles indoor and evening light reasonably well.

Frequently asked questions

What mount does the 7artisans 4mm f/2.8 use?

It uses the Fujifilm X mount, so it fits Fujifilm X cameras directly.

What is the focal length of the 7artisans 4mm f/2.8?

It is a fixed 4mm lens with a maximum aperture of f/2.8. That makes it a ultra-wide lens.

Is the 7artisans 4mm f/2.8 a prime or a zoom lens?

It is a prime lens with a fixed 4mm focal length. Primes usually open wider than zooms; this one opens to f/2.8.

What is the 7artisans 4mm f/2.8 equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 6mm on full frame, with a 143.1° horizontal and 149° diagonal field of view. These figures are calculated from the focal length and crop factor.

Which cameras does the 7artisans 4mm f/2.8 fit?

Any Fujifilm X-mount camera, including Fujifilm X-A2, Fujifilm X-A3, Fujifilm X-A5, Fujifilm X-E1, and Fujifilm X-E2 and 31 more.