Arshvista — Architectural visualisation: render | arshvista.com
The framing rules that make a render read as a photograph — focal length, verticals, and the pixel counts presentation images are delivered at.
Interior archviz is normally shot with an 8–24 mm full-frame equivalent so verticals converge less. The convention exists because architects read converging verticals as distortion: a building that leans inward reads as a camera error, not a design statement.
Longer lenses behave differently. A 24–35 mm lens covers roughly 65–90 degrees horizontally and exaggerates perspective at close walls — the near wall looms, the far wall shrinks, and small rooms read smaller than they are.
On narrow screens, swipe or scroll the plate sideways.
Delivery resolution is a convention too. Presentation images are usually delivered at 2000 px on the long edge for web banners and 3000–4000 px for full-screen hero images, and the choice is made before rendering, not after.
The reason is device pixel ratio: a 2× display needs four times the pixels of a 1× one. A hero image rendered to exactly 1920 px will soften on a retina-class screen, while a 3000–4000 px render survives the same display.
Framing and lighting meet at the window: the wider the lens, the more window in frame, and the more the exposure window from Archviz Lighting, IES Files and Exposure in Stops matters. Render settings for the final frame are in the Cycles Render Settings Checklist for Interiors.
Further reading