What's the difference between the Voigtländer Ultron 27mm F2 X and the Voigtländer Nokton 35mm F1.2 X?

The Ultron 27mm F2 X leads on a lighter 120g body, a more compact 23.5 mm barrel, closer 0.25 m focusing. The Nokton 35mm F1.2 X leads on a brighter f/1.2 maximum aperture, a 12-blade diaphragm.

Which is smaller, the Voigtländer Ultron 27mm F2 X or the Voigtländer Nokton 35mm F1.2 X?

The Ultron 27mm F2 X is the smaller, lighter lens at 120g and 23.5 mm long, versus 196g for the Nokton 35mm F1.2 X.

Which is faster, the Voigtländer Ultron 27mm F2 X or the Voigtländer Nokton 35mm F1.2 X?

The Nokton 35mm F1.2 X is the faster lens at f/1.2, against f/2 for the Ultron 27mm F2 X — brighter in low light and able to throw the background further out of focus.

Voigtländer Ultron 27mm F2 X vs Voigtländer Nokton 35mm F1.2 X: full comparison

Both are metal manual lenses, so pick the view: a small, sharp 40mm Ultron or a 52.5mm Nokton that glows at f/1.2.

Read the full Ultron 27mm F2 X review →Read the full Nokton 35mm F1.2 X review →

The short version

These are the two Voigtländer lenses Cosina makes for Fujifilm X. Both are all metal and manual focus only. Both have electronic contacts. These let the camera know which lens is on, so the focus aids work and the aperture is saved in EXIF. EXIF is the shooting data inside each photo.

So choose by the view and by how you want the photos to look. On a Fujifilm X camera, the Ultron 27mm f/2 shows about what a 40mm lens shows on a 35mm film camera. It's a 120g pancake. The Nokton 35mm f/1.2 shows about 52.5mm and weighs 196g.

At f/1.2, the Nokton is soft and glows around bright spots. It gets sharp by about f/2. Its twelve rounded blades keep out-of-focus lights round. The Ultron's ten straight blades make ten-point sunstars from about f/2.8. A sunstar is the star shape a bright light makes in a photo. I shot into a low sun from a bridge at f/8 and got one with no haze.

Voigtländer's list of supported cameras for the Nokton stops around the X-E4 and X-T30 II. My Nokton frames from the X-Pro3, X-E4 and X-T50 still saved the right f-numbers. The Nokton came out in 2021 and the Ultron in 2023. The Ultron costs around $600 and the Nokton around 649 EUR.

Where the Ultron 27mm F2 X wins

+a lighter 120g body
+a more compact 23.5 mm barrel
+closer 0.25 m focusing

Where the Nokton 35mm F1.2 X wins

+a brighter f/1.2 maximum aperture
+a 12-blade diaphragm

Who should buy the Ultron 27mm F2 X or Nokton 35mm F1.2 X?

Buy the Ultron 27mm F2 X if…

Pick the Ultron if you want the smallest Voigtländer for Fuji X and a 40mm view. It's sharp in the centre from f/2 and makes clean sunstars.

Buy the Nokton 35mm F1.2 X if…

Pick the Nokton if you want f/1.2 and a 52.5mm view for night streets and portraits. Buy it for the glow at f/1.2.

Ultron 27mm F2 X vs Nokton 35mm F1.2 X: pros and cons

Voigtländer Ultron 27mm F2 X	Voigtländer Nokton 35mm F1.2 X
Sharp in the centre at f/2. The change from sharp to blurred is short, so subjects stand out. Blurred lights come out clean, with no rings inside them. Ten straight blades turn bright lights into ten-point stars from about f/2.8. All metal, with a focus tab and a hard stop at infinity. The camera knows the lens is on, so focus aids, stabilisation and photo data work. Focuses as close as 25 cm, close enough for small details.	Opens to f/1.2. No Fujifilm 35mm lets in this much light. Twelve rounded blades keep blurred lights round when you stop down a little. All metal, with a focus ring that moves the glass directly. The focus ring stops hard at infinity, and the aperture ring clicks in small steps. The camera knows the lens is on, so focus aids, stabilisation and photo data work. Small for an f/1.2 lens: 196g and 39.8 mm long.
No autofocus. Everything past a few metres is in a tiny turn of the focus ring. At f/2 the corners are softer than the XF 23mm F2 R WR's, until about f/8. No weather sealing, on a lens people put on sealed X-Pro and X-T bodies. Since firmware updates in 2024, some Fuji bodies save f/22 as the aperture. Around $600, about 1.5 times the price of Fujifilm's 27mm with autofocus.	Manual focus only. Up close at f/1.2, only a few millimetres are sharp. At f/1.2 photos are soft and low in contrast. It's sharp from about f/2. Voigtländer's list of supported bodies stops around the X-E4 and X-T30 II. No weather sealing. Around 649 EUR, more than a used Fujifilm XF 35mm F1.4 R.

Voigtländer Ultron 27mm F2 X

Voigtländer Nokton 35mm F1.2 X

Sharp in the centre at f/2.
The change from sharp to blurred is short, so subjects stand out.
Blurred lights come out clean, with no rings inside them.
Ten straight blades turn bright lights into ten-point stars from about f/2.8.
All metal, with a focus tab and a hard stop at infinity.
The camera knows the lens is on, so focus aids, stabilisation and photo data work.
Focuses as close as 25 cm, close enough for small details.

Opens to f/1.2. No Fujifilm 35mm lets in this much light.
Twelve rounded blades keep blurred lights round when you stop down a little.
All metal, with a focus ring that moves the glass directly.
The focus ring stops hard at infinity, and the aperture ring clicks in small steps.
The camera knows the lens is on, so focus aids, stabilisation and photo data work.
Small for an f/1.2 lens: 196g and 39.8 mm long.

No autofocus.
Everything past a few metres is in a tiny turn of the focus ring.
At f/2 the corners are softer than the XF 23mm F2 R WR's, until about f/8.
No weather sealing, on a lens people put on sealed X-Pro and X-T bodies.
Since firmware updates in 2024, some Fuji bodies save f/22 as the aperture.
Around $600, about 1.5 times the price of Fujifilm's 27mm with autofocus.

Manual focus only. Up close at f/1.2, only a few millimetres are sharp.
At f/1.2 photos are soft and low in contrast. It's sharp from about f/2.
Voigtländer's list of supported bodies stops around the X-E4 and X-T30 II.
No weather sealing.
Around 649 EUR, more than a used Fujifilm XF 35mm F1.4 R.

Pros and cons mirror the in-house Ultron 27mm F2 X review and Nokton 35mm F1.2 X review.

Ultron 27mm F2 X vs Nokton 35mm F1.2 X: full specs

Spec	Ultron 27mm F2 X 27 mm · f/2 · 120g	Nokton 35mm F1.2 X 35 mm · f/1.2 · 196g
Optical
Focal length	27 mm	35 mm
35mm equivalent	40 mm	52.5 mm
Maximum aperture	f/2	f/1.2
Minimum aperture	f/22	f/16
Optical construction	6 elements in 4 groups	8 elements in 6 groups
Special elements	1 extra-low-dispersion element, no aspherical glass	1 abnormal partial dispersion element
Aperture blades	10	12
Focus & Stabilization
Min. focus distance	0.25 m	0.30 m
Max. magnification	0.15×	—
Autofocus motor	Manual focus only	Manual focus only
Optical stabilization	No	No
Physical
Filter thread	43 mm	46 mm
Diameter × length	59.3 × 23.5 mm	59.6 × 39.8 mm
Weight	120g	196g
Weather sealing	No	No
Min. operating temp	—	—
General
Announced	2023-05-15	2021-07-15

Highlighted cells are best in class between these two. Specs sourced from the manufacturers' public product pages.

In-depth reviews

For the full long-form review of each lens, see the Voigtländer Ultron 27mm F2 X review and the Voigtländer Nokton 35mm F1.2 X review. Each carries the full spec breakdown, pros and cons, and where the lens sits in the X-mount lineup.