Manual focus cinema prime lens for Sony FE mount cameras.
The Samyang VDSLR 85mm T1.5 AS IF UMC II is a cinema-specification manual-focus portrait telephoto for Sony FE mount. VDSLR indicates the video/cine variant with de-clicked aperture ring for smooth exposure pulls. AS = aspherical element, IF = internal focus (no barrel extension during focus), UMC II = ultra-multi-coating second generation.
85mm focal length, T1.5 maximum aperture (f/1.4 geometric), de-clicked aperture ring, internal focus, Sony FE mount, UMC II multicoating, manual focus only, 77mm filter thread.
The VDSLR version adds de-clicked aperture for video exposure pulls over the photo version. Internal focus keeps the front element stationary during focus — preventing the lens breathing (framing shift during focus pull) that affects externally-focusing designs in video use. T1.5 transmittance measures actual light delivered, accounting for element absorption. The 85mm position is the classic portrait focal length for full-frame; on APS-C Sony bodies it becomes approximately 127mm equivalent.
Test the de-clicked aperture ring for smooth, silent operation through its range. Check internal focus mechanism — verify no front element movement during full focus travel. Test Sony FE mount engagement. Test focus ring smoothness for pull-focus use. Inspect UMC II coating for cleaning marks.