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changes.mady.by.user Marcin Miodek

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Overview

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Corona Renderer includes its own Virtual Frame Buffer (VFB) window and interface that has been tuned to the most common needs of artists and can provide a very decent post-production experience and results.

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Image Added 

Corona VFB (Virtual Frame Buffer)

Corona VFB Shortcuts

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ButtonDescription

Saves currently displayed element in different file types.

Press and hold "Save" button.:

Save all – Saves each render element as a separate file using a specified format.

Save CXR – Stores all the information from the VFB (all render passes, including the LightMix, tone mapping, denoising data, etc...) inside a single CXR file.

Copies the content of the Corona VFB to the native 3ds Max VFB.

Copies the currently displayed element to the clipboard.

Useful for pasting the content of the VFB into other apps without the need to save the file.

Refreshes VFB.

Forces a VFB refresh. Useful mostly when using very high VFB refresh intervals.

Clears the VFB.

Toggles visibility of the side panel.

Selects a region to be rendered.

Left-click and hold to draw a region. Drag region border with Control key to use "fuzzy regions".

Allows to pick object from VFB.

Left-click to select an object. Right-click to select and object or set camera focus to the selected point in scene. Works also in interactive rendering.

Selects the element to be displayed.

Zooms in.

Zooms out.

Resets zoom.

Stops render.

Image Removed

Image Added

Press and hold "Render" button:

Render – Starts render.

Start IR –Starts Interactive Render.

Resume last –resumes last render.

Resume file – allows to continiue previously saved render in Corona EXR format

Starts render

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Post Tab

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Tone Mapping

Basic

Contrast – Changes contrast - the difference in brightness between light and dark areas of the image. Values greater than 1 increase the image contrast, and values below 1 decrease it.

Photographic Exposure – Changes overall exposure of the image based on the settings of the currently used camera.

Saturation – Controls the overall image saturation, negative values decrease it.

Tint – Sets the overall color tint of the scene. The entire image is multiplied by this color. This can be used both to add and remove color tints from the image. To add a tint, select the color of the tint directly. To remove tint from any rendered object, pick its color using the pick inverse eyedropper in Corona Improved Color Picker.

Vignette – Simulates the real-world camera vignette by darkening the edges of the image.

White Balance – Sets the white balance point using Kelvin temperature, often used in photography. Lower temperature leads to a bluish, cold appearance of the image, while higher temperature leads to a warm appearance.

Curve Control

Advanced Filmic Mapping – Applies highlight compression and shadow saturation control using Filmic S-curve. Allows more control over the curve compared to the basic Filmic operator. When enabled, the output is always in the interval [0, 1] so the bright pixels are compressed.

Curves – Applies custom color mapping curves.

Filmic Mapping – Allows highlight compression and shadow saturation control using Filmic S-curve.

Tone Curve – Allows independent control of different tones of the image - shadows (the darkest areas), darks, light, and highlights (the brightest areas).

Highlight control

Reinhard Highlight compression – Compresses highlights in the image to reduce/remove burned-out areas. Increasing the value removes burned-out areas, and decreasing it amplifies highlights.

Final look

ACES OT (Output Transform) – Applies approximate ACES Output Transform which is consisting of Reference Rendering Transform (RRT) and Output Device Transform (ODT).

LUT – Changing the overall look of the image by applying a predefined LUT.

UI Text Box
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The effect of this operator may not be unmapped correctly in CoronaTonemapContol, especially with the logarithmic option enabled or opacity set lower than 1.

Bloom and Glare

Size – Increases/decreases bloom and glare size.

Bloom intensity – Increases/decreases bloom intensity.

Glare intensity – Increases/decreases glare intensity.

Threshold – Controls the minimum brightness which is considered for the Bloom and Glare effect. Increasing the threshold applies Bloom and Glare only to the brighter pixels. Reducing it allows the Bloom and Glare effect to be applied to pixels that are less bright.

Color intensity – Controls how saturated the Bloom and Glare effect is. Higher values mean higher saturation.

Color shift – Changes the hue of the coloring added to the Bloom and Glare effect. 

Streak count – Defines the number of streaks for the glare effect. 

Rotation – Rotation of the glare effect in degrees.

Streak blur – Decides whether the glare streaks should be sharper or more blurry.

Custom aperture – Launches an editor which can be used to fine-tune advanced Bloom and Glare options.

Sharpening/Blurring

Sharpen amount – The value that is used to control sharpening.

Sharpen radius – Defines the sharpness radius.

Blur radius – Defines the radius of blur.

Denoising

Denoise amount – The main value that is used to control denoising. It blends between the original (noisy) image and the fully denoised version of the image, where 0 is the original image and 1 is the purely denoised version.

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