The listings show two focal lengths: 14 mm and 50 mm.
The listings specify T1.5 and T3.1.
They list full‑frame coverage and provide example field‑of‑view angles, such as 115.7° for full‑frame and 98.4° for Super35 (rectilinear).
The descriptions cite specialized elements — Aspherical, High Refractive Index, Hybrid Aspherical, and Extra‑Low Dispersion — and note a rounded nine‑blade aperture.
They describe a rounded nine‑blade aperture that produces smoother, more circular (soft, creamy) bokeh.