Voigtlander Ultron 40mm f/2 SL IIS Aspherical vs Septon 40mm F2 Aspherical

Both are Sony E prime lenses. Here is what actually differs.

Voigtlander

Ultron 40mm f/2 SL IIS Aspherical

f/2MF

Full specs

Voigtlander

Septon 40mm F2 Aspherical

f/2165 gMF

Full specs

Pick the Ultron 40mm f/2 SL IIS Aspherical if

You shoot close-ups: it focuses down to 0.25 m vs 0.3 m

Pick the Septon 40mm F2 Aspherical if

You care about the shape of out-of-focus highlights: 10 aperture blades vs 9

Spec differences

7 differences

Specifications that differ between the Voigtlander Ultron 40mm f/2 SL IIS Aspherical and the Voigtlander Septon 40mm F2 Aspherical
	Ultron 40mm f/2 SL IIS Aspherical	Septon 40mm F2 Aspherical
Weight	not listed	165 g
Length	not listed	30 mm
Diameter	not listed	61.7 mm
Min focus distance	0.25 m closer	0.3 m
Max magnification	not listed	0.19×
Aperture blades	9	10 more blades
Optical design	6 elements / 5 groups	7 elements / 6 groups

8 identical specs hidden: brand, mount, type, focal length, max aperture, filter thread, autofocus motor, image stabilization. Show all

Brand: Voigtlander both
Mount: Sony E both
Type: Prime both
Focal length: 40mm both
Max aperture: f/2 both
Filter thread: 52 mm both
Autofocus motor: Manual focus both
Image stabilization: No both

Our notes

Voigtlander Ultron 40mm f/2 SL IIS Aspherical

The Voigtlander Ultron 40mm f/2 SL IIS Aspherical is a fast standard prime lens covering 40mm at f/2 for Sony E mount cameras, with aspherical elements. The natural field of view suits street, documentary and everyday photography.

Our notes