Page History

Versions Compared

Key

This line was added.
This line was removed.
Formatting was changed.

...

Section

Column

width	25%

Column

width	20%

Image RemovedImage Added

Column

width	10%

Column

width	25%

Image Removed Image Added

Column

width	25%

Image Modified

Creates a layer. Multiple layers of the same type can be added.

Folder - Allows grouping multiple layers in folders. This is only available when the Source layer is set to Composite;

Background

Vignette – Adds a vignette effect to the render.
ICC profile – Allows you to apply ICC display correction.
Filmic Tonemap – Contains different types of mapping curves and gamma corrections. It also allows the selection of a color space.
Lookup Table - Allows loading a LUT file for color transformations;
Curves – Adds a

background

Curves color correction layer;

Render element - Selects a render element from your image that you can use in compositing. This is only available when the Source layer is set to Composite

Color Balance - Adds a Color Balance color correction layer;
Hue/Saturation - Adds a Hue/Saturation color correction layer;
White Balance - Adds a White Balance color correction layer;
Exposure - Adds an Exposure color correction layer;
Constant - Adds a solid color that can be used to achieve an effect on another layer (for example to multiply by the constant);

Exposure - Adds an Exposure color correction layer;
White Balance - Adds a White Balance color correction layer;
Hue/Saturation - Adds a Hue/Saturation color correction layer;
Color Balance - Adds a Color Balance color correction layer;
Curves – Adds a Curves color correction layer;
Lookup Table - Allows loading a LUT file for color transformations;
Filmic Tonemap – Contains different types of mapping curves and gamma corrections. Also allows selection of a color space.

Render element - Selects a render element from your image that you can use in compositing. This is only available when the Source layer is set to Composite; Background – Adds a background color correction layer; Integer mask – Add an integer mask to the currently selected layer. MultiMatte mask – Add a MultiMatte mask to the currently selected layer. Image alpha mask – Add an Image alpha mask to the currently selected layer. Cryptomatte mask – Add a Cryptomatte mask to the currently selected layer. Proportion Guide – Adds proportion guides to the VFB preview. These are not added to the render.	Image Added
Image Added	Deletes the selected layer(

Image Removed

Deletes the selected layer(

s).
Image Modified	Saves

the layer tree as a preset.
Image Modified	Loads a layer tree preset from a chosen destination.
Image Modified	Quick access to the custom layer

presets. You

presets. By default, this shows the V-Ray filter presets. If you wish to apply your own presets, you must set the path to

them in the VFB Settings.	Image Added
Image Modified	Undo create layer.
Image Modified	Redo create layer.

Command	Description
Reset	Resets all changes done to the selected layer.
Save	Saves the layer as a preset.
Load	Loads a preset for the selected layer.
Delete	Deletes the selected layer.
Save all CCs as LUT	Bakes all the color corrections to a LUT file.
New Layer	Creates a new layer.
Duplicate	Duplicates the selected layer.
Blend Modes	Specifies how the selected layer blends with the result from all layers below it.

...

Blend Modes

...

Section

Column

width	55%50%

Layers are applied from the bottom to the top, where the bottom is the background (BG) and the top is the foreground (FG) of the composite.

Opacity – Controls the weight of the layer. A value of 0 means no effect and a value of 1.0 means full effect.

Blend Mode – Specifies how the layer blends with the result from all layers below it.

UI Text Box

type	tip

When adding a new layer, it is placed on top of the stack and it is considered the foreground (FG).

The result of all layers below it is considered the background (BG). Layers are applied from the bottom to the top.

Column

width	5%

Column

width	40%45%

Where darker and lighter pixels are mentioned, it is in relation to mid-grey.

...

Display Correction

...

Section

Column

width	55%50%

The Display Correction layer specifies the color space, in which the image is displayed. You can choose between sRGB, Gamma 2.2, OCIO and ICC or select None to return to a linear display.

The ICC correction allows you to apply an ICC profile to the image, so that (for example) it matches the appearance of the image in Adobe Photoshop. This is a display correction that is only applied when the image is viewed in the frame buffer. It is not applied when the image is saved to a file.

The OCIO correction allows you to apply color corrections from an .ocio color profile to image colors. When this correction is enabled and no specific .ocio profile is specified, it attempts to read the OCIO environment variable and apply the profile specified in it.

Column

width	5%

Column

width	40%45%

Image Modified

UI Text Box

type	tip

Normally you would specify the ICC file for your calibrated monitor here. Programs like Photoshop display images using your (primary) monitor's ICC profile automatically. However (at least for the moment), Cinema 4D is not a color-managed application and you must manually load the monitor ICC profile into the V-Ray frame buffer in order to match the appearance of your images in Photoshop.

...

OpenColor (OCIO)

...

Section

Column

width	55%50%

Input color space – Specifies the input color space for the image; normally this is a linear color space as V-Ray internally works in that space.

Display Device – Specifies the device on which the VFB with the image is displayed.

View Transform – Specifies the viewing transformation.

Save in image – Saves/bakes the OCIO effect along with the image. This does not affect multi-channel images (such as multi-channel .exr).

Column

width	5%

Column

width	40%45%

Image Modified

Source

...

Section

Column

width	55%50%

The Source layer determines the input of the layers stack. It specifies if you work on your rendered image, composite or light mix.

RGB - The rendered image is the source.

LightMix - This mode allows you to adjust the intensity and color of your lights during and after the render. Changes can be transferred back to the lights in the scene. To use LightMix, add a VRayLightMix render element before rendering.

Composite - You can add Render element layers in this mode and start compositing your image from the render elements rendered with it. For example, you can do a simple Back to Beauty compositing of your image in this mode.

Column

width	5%

Column

width	40%45%

Image Modified

LightMix Mode

...

Section

Column

width	55%50%

When the Source is set to LightMix, you can enable/disable lights and adjust light intensity and color during and after the render. The modifications can be saved as light mix presets and reused. VRayLightMix VRayLightMix automatically creates Environment and Self Illumination render elements. See the LightMix page for more information and examples.

Reset – Resets all changes made to default values.

Save – Saves the changes as a light mix preset.

Load – Loads a light mix preset.

To scene – Applies the current VRayLightMix changes to the scene. This sends all changes to colors/intensities back to the scene lights.

To Composite – Sends the Light Selects from LightMix to Composite for additional post adjustments.

Recent – Shows a list of recent light mix presets.

Checkbox – Enables/Disables the selected light.

Multiplier – Specifies an intensity multiplier.

Color Slot – Specifies a color for the selected light.

Column

width	5%

Column

width	40%45%

Image Modified

Lens Effects

...

Section

Column

width	55%50%

The Lens Effects layer simulates real-world camera lens effects such as bloom and glare. The plug-in uses a fast multi-threaded technique to compute the result and provide immediate updates in the VFB. V-Ray Lens Effects are applied in the effectsResult channel together with other post effects executed over the RGB rendered image. See the Lens Effects page for more information on the individual parameters of this layer.

Column

width	5%

Column

width	40%45%

Image Modified

Sharpen/Blur

...

Section

Column

width	55%50%

This layer helps you compute sharpening or blurring post-effects to your image.

Calculate Sharpen/Blur – Enables computation on the sharpen/blur post effect and automatically sets it visible when computed.

Sharpen amount – Applies sharpening to the image. Increasing the amount leads to a sharper image, while setting the amount to 0 switches off this filter.

Sharpen radius – Determines the radius in pixels used for sharpening. Higher values lead to more extensive sharpening.

Blur radius – Determines the radius in pixels used for blurring. Higher values lead to a greater blurring effect.

Column

width	5%

Column

width	40%45%

Image Modified

Denoiser

...

Section

Column

width	55%50%

This layer allows you to control the V-Ray Denoiser from inside the VFB. This layer is available only if the V-Ray Denoiser is enabled. Enable it from the Render Settings.

Calculate denoiser – Enables/disables the denoiser calculation. This can be useful sometimes while adjusting your render. Disabling the denoiser layer visibility instead still calculates the denoiser in the background.

Update – Updates the Denoiser layer manually and also initiates a Lens Effects update.

Preset – Offers presets to automatically set Strength and Radius values.

Default – Applies mid-level denoising.
Mild – Applies a more subtle level of denoising than the Default preset.
Strong – Applies a stronger level of denoising than the Default preset.
Custom – Allows the Strength and Radius parameters to be set to custom values.

Hardware accelerated – Uses the GPU device(s) to accelerate the denoising calculations. In case there is no compatible GPU device, denoising automatically falls back to use the CPU, even if the option is enabled. When the NVIDIA AI denoiser is used, this option is not available, as it requires an NVIDIA GPU.

Column

width	5%

Column

width	40%45%

Image Modified

Background

...

Section

Column

width	55%50%

This section allows you to load an image and use it as a background for your render.

Opacity – Determines the opacity of the layer.

Color – When enabled, sets a color value as the background.

Image – When enabled, loads a file that is going to be used as a background.

Stretch – Control the aspect ratio of the image by stretching the image to fit the VFB.
Fit – Keeps the aspect ratio of the image. Enlarges or shrinks the VFB to fit the image.
Fill – Keeps the aspect ratio of the image and cuts some parts of the picture to fill the VFB.

Horizontal Offset – Controls the background image position by the X axis.

Vertical offset – Controls the background image position by the Y axis.

As foreground – When enabled, the image loaded in the Image field is used as a foreground. This means that the image is on top of the render and you are able to see the render only if the image has an alpha channel.

Save in image – When enabled, saves the Background layer to the image.

Color Transformation – This dropdown allows display corrections to be applied to the Background layer independently.

Auto – Recognizes what the desired transformation would be based on the image suffix (_srgb, _lin_srgb, _acescg...) and sets those settings automatically.

Manual – Allows manual setup of the color transformation options. The options can be left at Auto and be determined automatically by V-Ray. The options can be set to None and apply no transformations.

RGB color space – Choose which color space to use for the color transformations. sRGB is the color space for most monitors and computer displays. ACEScg allows for greater range of color transformations in post. It has a wider gamut of colors than the sRGB linear gamut.
Transfer function – Alters the pixel values to a new range. Gamma 2.2 is the standard for most monitors.

OCIO – Allows an Input color space to be selected when an OCIO profile is already loaded. OCIO profiles can be loaded either through the Display Correction layer.

Input color space – Determines the input color space for the background image; normally, this is a linear color space as V-Ray internally works in that space.

UI Text Box

type	tip

When there is a Dome Light placed in the scene, it needs to either be set as Invisible, or the Affect Alpha option needs to be turned off for the Background layer to display.

Column

width	5%

Column

width	40%45%

...

Source

...

Section

Column

width	55%

This color correction applies a solid color that can be used as a constant to achieve an effect on another layer. For example, it can be multiplied by another layer.

Column

width	5%

Column

width	40%

Image Removed

Exposure

50%

The Source layer determines the input of the layers stack. It specifies if you work on your rendered image, composite or light mix.

RGB - The rendered image is the source.

LightMix - This mode allows you to adjust the intensity and color of your lights during and after the render. Changes can be transferred back to the lights in the scene. To use the LightMix, add a V-Ray LightMix render element before rendering.

Section

Column

width	55%

This color correction applies exposure and contrast to the image. An Exposure value of 0.0 leaves the original image brightness, +1.0 makes it twice as bright, and -1.0 makes it twice as dark. Highlight Burn selectively applies exposure corrections to highlights in the image. Positive Contrast values push the colors away from the medium gray value to increase image contrast, while negative values push the colors closer to medium grey.

Column

width	5%

Column

width	40%45%

Image RemovedImage Added

...

Vignette

...

Section

Column

width	55%

The White Balance (Temperature) slider corrects the colors in the image so that objects that are white appear as pure white (and not tinted blue, yellow, red, etc.) in the final image.

Column

width	5%

Column

width	40%

Image Removed

Hue/Saturation

...

50%

This layer adds a vignetting effect to the image. Its settings can be controlled through the layer's parameters or directly from the overlay handles visible in the VFB.

Preview as mask – Opens the vignette mask for the vignette effect, so you can preview it.

Size – Determines how much of the image's edge is affected. The size is relative to the image resolution.

Feather – Controls how defined is the edge of the vignette. Smaller values make the transition sharp, while larger values make the transition effect soft.

Rotation – Rotates the vignette effect. Increasing this value rotates the effect counterclockwise.

Inverted – Inverts the vignette effect.

Smoothness – Controls how smooth the outer edge of the Feather effect is.

Aspect ratio – This option is available when Match image aspect option is disabled. It allows for manual control over the aspect ratio.

Match image aspect – This option is enabled by default. It matches the currently loaded image aspect ratio.

Horizontal center offset – Offsets the center of the vignette effect horizontally.

Vertical center offset – Offsets the center of the vignette effect vertically.

Color – Sets a color for the vignette effect.

Show handles – Controls the preview of the overlay handles.

Never – The handles are not displayed.
Auto – Displays the handles only upon image hover.
Always – Displays the handles at all times.

Column

width	55%

This correction applies HSL transformation on the image colors. Moving the Hue slider changes the overall hue of the image colors (grey colors remain intact). Lower Saturation values move the image towards greyscale while higher values increase the colors' intensities. Higher Lightness values add white to the image, whereas lower values subtract white from the image.

...

width	5%

Column

width	40%

Image Removed

Color Balance

Section

Column

width	55%

This correction adjusts the overall color tone of the image, as well as the tone of the dark (shadow), medium, and bright (highlight) colors. The color corrections are additive in that the All correction affects all colors of the image, and the Shadows/Midtones/Highlights options adjust the individual components in the image on top of the All correction.

Column

width	5%

Column

width	40%45%

Image RemovedImage Added

...

ICC Profile

...

Context Menu

Right-clicking in the curve view brings up a context menu with additional options:

Section

This correction allows you remap the image colors with a Bezier curve. The control also allows you to save and load .acv curve files from Adobe Photoshop.

Controlling the View

Use the mouse wheel to zoom in and out of the curve view. Drag with the middle mouse button to pan.

Controlling the Bezier Points

Click on a point to select it. Draw a rectangle to select multiple points at once. Click and drag on a selected point or its tangents to move them. To add a new point, Ctrl+click on the curve. To delete points, select them and press Del, or alternatively Shift+click on a point. Once a point is selected, you can also use the input coordinates field to modify its position. To display the input coordinates field, either press Enter or right-click on the point and then select Edit point.

Right-click on a point to bring up a context menu with additional options for that point.

Column

width	55%

Expand

title	Click here to see the context menu

Section

Column

width	40%

Column

width	20%

Image Removed

Column

width	40%

Menu Item

Description

Zoom all

Adjust the curve view so that all points are visible.

Undo/Redo

Undo and redo modifications to the curve.

Load

Load the curve control from a file. Two formats are available: native .bcurve and Photoshop .acv.

Save

Save the curve control to a file. Two formats are available: native .bcurve and Photoshop .acv.

Reset Master

Reset the curve control to its default state.

Select internal only

Select only the points which are currently visible in the curve view.

Select all

Select all points.

Snap to grid

Toggle snapping to the curve grid. When enabled, moving points snaps them to the grid nodes.

Column

width	5%

Column

width	40%

Image Removed

UI Text Box

type	note

When working with .acv files, some approximations are performed because the curves in the .acv files are described by different mathematical formulas.

Lookup Table

50%

ICC file – Specifies the full path to the ICC file.

Profile cached – When loading an ICC file, this checkbox indicates whether the file is smaller or bigger than a given threshold of 64k. If the file is smaller than 64k, the checkbox is enabled to indicate that the ICC file is directly embedded in the scene. If the loaded file is bigger than 64k, the checkbox is inactive, which indicates that you have to set the correct path to load it.

Rendering Intent – Specifies an ICC color replacement scheme. You can choose from Perpetual, Relative colorimetric, Absolute colorimetric, and Saturation.

Black point compensation – Enables black point compensation. This is a method of creating adjustments between the maximum black levels of digital files and the black capabilities of various digital devices.

Column

width	5%

Column

width	45%

Image Added

Filmic Tonemap

...

Section

Column

width	50%

This correction allows you to control different types of mapping curves, make gamma correction and select a color space. Note that color values are mapped per channel.

Tone mapping space – Specifies the color space where the operator is applied. Converts the image to the selected space and back, if needed. You can choose between Linear sRGB and ACEScg.

Type – Specifies the type of curves used for the tone mapping. You can choose between Linear, Hejl-Dawson, AMPAS (ACEScg), Hable, and Power Curve.

Log space – Converts the image to log space before applying the tone mapping.

Gamma – Specifies the gamma correction. It is applied before the operator.

Use blue fix – Applies an additional transformation to ACEScg primitives that results in pure blues burning out through cyan instead of magenta. Available when Tone mapping is ACEScg.

AMPAS (ACEScg)

AMPAS mode applies an approximate ACES standard curve.

Hejl-Dawson Type

Shadows – Shadow compression. Higher values darken the shadows, while also brightening the mid tones.

Highlights – Highlight compression. Higher values reduce burnout.

Hable Type

Shoulder strength – Determines how sharp the shoulder is. Higher values sharpen the shoulder, which results in an overall brighter image.

Linear strength – Determines the strength of the effect from changing Linear angle.

Linear angle – Determines the angle of the curve at the base. Higher values increase the angle.

Toe strength – Low to mid tone compression. Higher values darken the low and mid tones.

White point – The intensity, which gets mapped to 1. This parameter scales the whole curve evenly.

Power Curve Type

Toe length – Determines the range of low to mid tones that are compressed.

Toe strength – Low to mid tone compression. Higher values darken the low and mid tones.

Contrast – Higher values increase the contrast between low and high tones.

Shoulder length – Determines the range of mid to high tones that are compressed.

Shoulder strength – Mid to high tone compression. Higher values darken the mid and high tones.

White point – The intensity, which gets mapped to 1. This parameter scales the whole curve evenly.

Column

width	5%

Column

width	45%

Image Added

Lookup Table

...

Section

Column

width	50%

This correction allows you to remap the image colors based on an IRIDAS .cube LUT (Look-Up Table) file.

Convert to Log Space first – Converts the Base map to a logarithmic color space before applying the look-up table.

Convert to sRGB Space first – Converts the Base map to an sRGB color space before applying the look-up table.

Save in image – Saves/bakes the LUT effect along with the image. This does not affect multi-channel images (such as multi-channel .exr).

Column

width	5%

Column

width	45%

Image Added

Curves

...

Section

Column

width	50%

This correction allows you remap the image colors with a Bezier curve. The control also allows you to save and load .acv curve files from Adobe Photoshop.

Controlling the View

Use the mouse wheel to zoom in and out of the curve view. Drag with the middle mouse button to pan.

Controlling the Bezier Points

Right-click on a point to bring up a context menu with additional options for that point.

Expand

title	Click here to see the context menu

Section

Column

width	40%

Column

width	20%

Image Added

Column

width	40%