Chaos® Corona is the only renderer created specifically for high-end architectural visualization. Be an artist, not a technician, and achieve photorealism with greater ease than other rendering software.


Real-time scene exploration & GPU rendering in Vantage.
Scene export from Corona to Vantage
Combine the ease of use and unmatched photorealism of Corona with the high-end real-time ray tracing of Vantage to achieve the archviz dream — fast and easy photoreal rendering. Now, effortlessly export scenes to Vantage, explore them in real-time and render images in seconds. Create short animations directly in Vantage and enjoy the lightning-fast speed of GPU rendering.
Note: With the introduction of Live Link in Corona 13, users will be able to import animations created in Corona for 3ds Max and Cinema 4D and render them in Vantage.
More powerful detailing of scenes.
Curved Decals
Curved Decals allow users to perfectly bend labels to round or curved objects such as bottles, cups, etc. without any distortions and with incredible ease. Labels can be bent up to the full 360 degrees to map a pattern around an object. In addition, decals can now be bent around a second axis, allowing users to add decals to spherical objects like balls, balloons and more.
Corona Pattern improvements
Create new and incredibly realistic materials with the help of Corona Pattern. Geometric objects can now be used to define the shape of the crop box, allowing designers to employ snapping tools and more to get the perfect pattern.
New Scatter controls.
Scatter Instance Brush (Corona for 3ds Max)
Get further creative control over the scattering process with the new Scatter Instance Brush in Corona for 3ds Max. Refine your procedural scatter to the last detail, using a brush to paint in or delete procedural instances.
New VFB & improved workflow.
Revamped Virtual Frame Buffer (VFB)
Experience a more streamlined workflow with the ability to save multiple LightMix setups within one render. Easily compare images with different resolutions and aspect ratios. Save time by loading a Corona EXR (.cxr) file and going straight to editing it. Enjoy these and more new features along with an enhanced user interface in the new version of the Corona Virtual Frame Buffer (VFB).
Other improvements.
Improved Corona Sky
Fading in from day to night has never been better. The improved Corona Sky supports even lower sun angles below the horizon, which makes day/night animations and still images more realistic and immersive.
Density parameter
Now Corona Sky also includes a Density parameter — lower it to make your clouds thin and wispy all the way down to invisible, or raise it to make them dense and thunderously heavy.
Cryptomatte by material
Enjoy a more streamlined workflow with the new Cryptomatte by material. The Cryptomatte render element now works correctly in Distributed Rendering (3ds Max) and Team Render (Cinema 4D), and when using Resume Render.
Enhanced material conversions
The conversion from VRayMaterial to Corona Physical Material has been enhanced, improving imports from Chaos Cosmos. In Cinema 4D, the Scene Converter can now convert between Corona and C4D bitmaps and supports the conversion of V-Ray lights.
Corona Materials now in Chaos Cosmos
The Corona Material library is now available also on Chaos Cosmos which can save you time switching between the two asset libraries.


Chaos Corona 12 for 3ds Max (Hotfix 1)
This release brings the following improvements and bug fixes:

Improvements

Disabled history autosaving for sequences and for render nodes during distributed rendering. This is to avoid popping up a blocking confirmation dialog about history item deletion when the user is likely not around.
Added bakeIthLightMix function to MAXScript to allow baking parameters of a specific light mix element.

VFB 2

Fixed issue where several of the new parameters (Bloom&Glare compute after rendering, IR resolution lock, VFB history settings) could not be accessed via maxscript.
Fixed issue where interactive rendering would disable denoising blending in VFB2 for the following production rendering.
Fixed errors when switching color management mode while IR is running.
Fixed crash when using "scene-linear Rec.709-sRGB" space in OCIO mode, when the scene contains dispersion.
Fixed pick and region mode turning off after IR is started.
Improved rendering speed of the Corona Tile Map on high core count machines.
Fixed crash in Corona Pattern occurring when using a pattern object with degenerate triangles.
Fixed issue where changing aperture parameters did not refresh VFB2.
Fixed rare crash while switching from zoomed-in production rendering to interactive rendering.
Light select names in VFB2 now update after renaming and re-rendering, also when editing a specific CXR loaded into the VFB.
Fixed issue where VFB2 could crash when deleting a history item without using VFB2 controls.
Fixed issue where light mix was reset when docked IR was started.
Fixed dialog resizing on render start to adjust its size to contain as much of the rendered image as possible.
Fixed locked IR resolution second dimension value being wrong on entering (due to upscaling factor).
Fixed issue where VFB2 was not updated when render stamp was changed from MaxScript.
Fixed issue in Corona Image Editor where tone mapping in rare cases could look different than tone mapping in Corona VFB.
Improved frames per second in docked VFB.
Fixed issue where NVidia denoiser was not applied during production rendering. Added missing refresh of VFB when denoising is done.
Fixed issue where IR was restarted while VFB dialog size was changed even though its resolution should have remained unchanged.
Fixed copying of colors between different color swatches in Lightmix tab.
Fixed issue where 3ds Max would freeze when history item deletion dialog is shown after rendering finishes.
Fixed saving of CXRs for light mix elements.
Fixed bad_optional_access error when opening Render setup dialog during rendering.
Light mix layers can now be toggled by clicking on their names, not just the checkbox, same as in the old VFB.
GammaCorrectionOperator present in .conf files is now handled correctly - the operator is removed from the pipeline and the rest is loaded correctly.
Fixed issue where real-world mapping was not applied on some materials imported from Cosmos.
"Show VFB" now also raises the VFB2 above other 3dsMax's dialogs (as VFB1 did).
Fixed IR restarting/changing appearance after Render Setup dialog is open.
Fixed issue where VFB would show when updating a scene with docked IR running.
Fixed color management update when loading a Corona scene with another renderer being set as default.
Fixed issue where old V-ray materials could not be rendered/converted.
Fixed incorrect position/scale of VFB2 after restore from previous session on multi dpi monitor setups
Fixed issue where scatter edge trimming would in some cases incorrectly trim instances.
Fixed issue where minimized VFB stays hidden when rendering starts.
Fix of not updating VFB2 when option "Lock 3ds Max during render" is enabled.

https://www.chaos.com/corona