Voigtlander's ultra-fast MFT prime — the Nokton 25mm f/0.95 with 50mm equivalent DOF control.
The Voigtlander Nokton 25mm f/0.95 is an ultra-fast prime designed specifically for the Micro Four Thirds system, delivering a 50mm full-frame equivalent field of view. The Nokton designation indicates Voigtlander's fastest aperture class, and the f/0.95 maximum aperture is one of the widest available in any Micro Four Thirds lens.
The lens delivers 25mm (50mm equivalent on MFT) at f/0.95 maximum aperture with fully manual focus and aperture control, electronic MFT contacts for EXIF data communication and in-body image stabilisation compatibility, and a metal barrel with smooth-damped focus and aperture rings.
The f/0.95 aperture gives Micro Four Thirds shooters light-gathering capability that significantly exceeds typical fast primes — at f/0.95 it admits more than twice the light of an f/1.4 lens. This partially compensates for the MFT sensor-size disadvantage versus larger systems in low-light environments. It is particularly valued by documentary and street photographers on Olympus OM-D and Panasonic GH bodies.
Check the focus ring for smooth, precisely damped action — at f/0.95 depth of field is measured in millimetres at portrait distances, and precise focus ring control is essential. Inspect aperture blades for oil contamination, which would directly degrade the extreme-aperture bokeh rendering. Verify the electronic MFT contacts for IBIS compatibility on the intended body.