User manual

Maxwell Render 2.5 User Manual

Chapter 9. The core rendering application | 48

then disable the Simulens again and resume the render. For adding Simulens effects to a

range of MXI les after the render is completed, use File>MXI Batch Processing. This tip

does not apply to the Devignetting effect which does not use more RAM or calculation time,

you can enable it before starting the render

• Devignetting: Vignetting is an artifact that darkens an image around the edges due

to camera optics. The Devignetting slider removes the vignetting effect partially or

completely by dragging it from 0 to 100%. In the real world, the more wide-angle the

lens is (for example, a focal length of 24mm), the more pronounced the vignetting

will be. As you raise the focal length of the camera, the vignetting effect will be less

pronounced. A focal length of around 80mm or higher will have almost no vignetting,

no matter the Devignetting settings used.

9.04 The Multilight™ Tab

F.01 Multilight™ Tab

Multilight™ is a unique and very useful feature that allows you to interactively adjust the

intensity and/ or color of the emitters in the scene and to alter the ISO and shutter speed

during rendering or after the render has nished. The adjustments can be keyframed and

animated over time, and a sequence of images can be saved. Users can save different

images of the same scene under different lighting conditions or make lighting animations

from only a single render.

Intensity vs. Color Multilight modes

New in Maxwell Render V2 is the possibility to adjust the color of an emitter, instead of

only its intensity. The Color Multilight mode is separate from Intensity because Maxwell

Render has to use more RAM while rendering to also store color adjustments per emitter.

The amount of RAM usage depends on the rendering resolution and number of separate

emitter materials in the scene (which will determine the number of sliders you will have in

Multilight). If your computer does not have enough RAM to render in Color Multilight mode

for a particular render, you can switch to Intensity mode, or lower the rendering resolution

and/ or reduce the number of separate emitter materials in your scene. Please note that

changing the color of IES emitters is currently not supported.

You can even choose between exporting all the emitters´ contribution to independent

images (Separated), or saving only the composed render (Embedded).

Note: The Color Multilight feature and the Shadow Channel exportation are incompatible,

so if both features are enabled together the render will be stopped and an error message

will appear in the Maxwell console.

F.01 Multilight example images