Viltrox announces AF 40mm F2.5 Z, a full-frame autofocus prime lens for Z-mount: Digital Photography Review
Image: Viltrox
Viltrox has announced the new AF 40mm F2.5 Z lens for full-frame Nikon Z-mount cameras. The lightweight prime lens provides a normal field of view, roughly approximating the perspective of human vision.
Optically, the AF 40mm F2.5 Z features an internal focus design built around ten elements in six groups. This includes one ED lens, one aspherical lens, three high-refractive index lenses, a high-definition nano-multilayer coating, and a front lens element that includes an anti-fouling coating. The close focus distance is 0.34m (13″).
Image: Viltrox
The lens includes a 52mm filter thread and features a 7-bladed aperture.
The AF 40mm F2.5 Z weighs a relatively lightweight 180g (6.3oz). A stepper motor drives autofocus, and Viltrox says the lens is compatible with face and eye recognition systems. It also says the lens should be suitable for shooting video thanks to low distortion and minimal focus breathing.
On the tech side of things, Viltrox says the lens supports full EXIF transmission to the camera, and it includes a USB interface to support future firmware upgrades.
Viltrox says the AF 40mm F2.5 Z will be available “as soon as April.” It has a suggested retail price of $158.
Sample gallery
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Viltrox AF 40mm F2.5 Z specifications
Principal specificationsLens typePrime lensMax Format size35mm FFFocal length40 mmImage stabilizationNoLens mountNikon ZApertureMaximum apertureF2.5Minimum apertureF16Aperture ringNoNumber of diaphragm blades7OpticsElements10Groups6Special elements / coatings1 ED element, 1 aspherical element, 3 high refractive index elements, nano-multilayer coatingFocusMinimum focus0.34 m (13.39″)Maximum magnification0.14×AutofocusYesMotor typeStepper motorFull time manualUnknownFocus methodInternalDistance scaleNoDoF scaleNoPhysicalWeight180 g (0.40 lb)Diameter68 mm (2.68″)Length56 mm (2.2″)MaterialsPlasticSealingNoFilter thread52 mmHood suppliedYesTripod collarNo
