VILTROX PFU RBMH 85mm F1.8 STM Auto Focal point prime lens is a big aperture lens designed for Sony E mount camera.
Improve Auto Focal point and Electronic Aperture
Noiseless STM Focal point motor, brings precise and smooth focus
Improve Full Frame,85mm focal length,F1.8 large aperture
Refined optical design,10 elements in 7 groups,including 1 ED lens and 4 short wave length and high transparent lens
HD Nano multilayer coating
Precision metal structure
Improve firmware upgrade
Focal Length: 85mm
Aperture: f1.8 – f16
Aperture Blades No.: 9
Camera Mount: Sony E-Mount
Format Compatible Frames: Full frame
Shooting Distance: 0.8 m (31.50″) – ∞
Field Angle: ( Diagonal/horizontal/vertical)28°46′ / 23°58′ /15°58′
Focal point Mechannism: AF (Internal Focal point)
Image Field Diameter: 43.2 mm (1.7″)
Close Range Coverage: 192 × 288mm (7.56 × 11.34″)
Image Ratio at Min. Distance: 1: 8
Lens Structure: 10 elements in 7 groups
Flange Distance: 18mm (0.71″)
PupilPosition (ImageSurfaceBenchmark): 10 mm (0.39″)
Auto Focal point: Improve ( Focal point Peaking+PDAF )
Image Stabilization: Improve in-camera stabilization
Auto Iris: Electronic auto iris
EXIF Information: Support
Filter Specification: 72mm
Rotation Angle of the Focusing Ring：360°
Max. Diameter：80 mm (3.15″)
Diameter of the Focusing Ring：80 mm (3.15″)
Length (with Lens Cap)：100 mm (3.94″)
Length (without Lens Cap)：92 mm (3.62″)
Weight：626 g (1.38 lb)
Sony A7III A7RIII A7SII A7RII A7II A9 A7 A7R A6400 A6500 A6300 A6000 A5100 A5000 NEX-7
A stepping motor (STM) is used to drive the autofocus and the lens includes a minimum focusing distance of 80cm (2.62ft). The front filter size is 72mm and integrated contacts power the aperture mechanism and deliver EXIF data to compatible Sony cameras.
The lens, which has an aperture range of F1.8 to F16, is designed for full-frame Sony cameras, but additionally works as a 127.5mm an identical on APS-C cameras.
It is constructed of ten elements in seven groups, including one extra-low dispersion element and four specialty elements made out of ‘highly transparent glass,’ which reduces aberrations and improves color rendering.
Uses an ‘HD Nano’ multi-layer coating on individual elements to minimize ghosting and flares.
The lens is an integrated microUSB port positioned at the rear metal mount of the lens. This connector is used to upgrade the lens’ firmware.