|Lens type||Prime lens|
|Max Format size||35mm FF|
|Focal length||85 mm|
|Lens mount||L-Mount, Sony FE|
|Number of diaphragm blades||11|
|Special elements / coatings||1 aspherical + 5 SLD elements|
|Minimum focus||0.85 m (33.46″)|
|Motor type||Stepper motor|
|Full time manual||Yes|
|Weight||630 g (1.39 lb)|
|Diameter||83 mm (3.27″)|
|Length||94 mm (3.7″)|
|Filter thread||77 mm|
The Sigma 85mm F1.4 DG DN is a fast portrait prime lens for Sony E and Panasonic/Leica/Sigma’s L-mount. The lens features 15 elements, including 1 aspherical and 5 SLD (special low dispersion). It has 11 aperture blades and its focus unit is driven by a high-speed stepping motor. The minimum focus distance of the 85mm F1.4 is 0.85m (34″) and the maximum magnification is 0.12x.
The lens’ aperture ring has a ‘click switch’, allowing users to choose between ‘clicky’ and smooth rotation, as well as a ‘lock switch’ to prevent accidental rotation. The lens is very well built and weather-sealed yet weighs just 630 grams (1.4lbs).