Install

1. In Blender 5.0 or newer, open Edit › Preferences › Get Extensions.
2. Click the arrow menu (top right) › Install from Disk… and pick the Oris .zip.
3. Oris appears in the 3D View sidebar (N) as the Oris tab, and in Properties › Camera.

Quick start

1. Sidebar › Oris › Create Camera. A physical lens camera is made from the current view, becomes the scene camera and focuses on what is in the middle of the view. The render engine switches to Cycles.
2. Pick a lens in the Lens tab (or open the Lens Library) and set Focal Length and F-Stop. Focus uses Blender's own Focus Object and Distance.
3. The other tabs: Bokeh (aperture, character, aberration), Glass (dirt, rain, diffusion), Film (grain, halation, bloom), Shake, Output (per-camera resolution and render queue) and Atmosphere (dust, snow, rain, fog).

An existing camera can be turned into a physical lens with Make This a Physical Lens. The ✕ next to the lens name turns it back into a normal camera and keeps the settings.

Tips

• Use Fast Preview while you work in the viewport. It turns the lens off for speed.
• If a lens shows dark corners, the panel shows its coverage, and Fit Frame to Lens crops the sensor so the whole frame sits inside the image circle.
• Dirt and rain glow only against bright light, like on a real lens. Highlights seen through them need a few more samples, and the denoiser handles them well.
• Rain drops sharpen into bright blobs at f/5.6–f/11 and melt into a wet smear wide open.
• Import your own lens as text, CSV or a pbrt .dat table: radius, thickness, n_d, Abbe V and aperture diameter per surface, front to rear. The stop is a row with radius 0.
• The compiled lens is saved in the .blend, so render farms do not need Oris installed.

Support

Questions or ideas: [email protected]