BCC+ Lens Blur

BCC+ Lens Blur

BCC Blur

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The BCC Lens Blur filter emulates a lens blur defocus/rackfocus effect where out of focus highlights of an image clip take on the shape of the lens diaphragm. When a lens is used at its maximum aperture (fully open / set to the smallest f stop number) the out of focus highlights are typically in the shape of a circle, however, when the lens is stopped down (set to something other than the smallest f stop number) the blades inside the lens shape the out of focus highlights into multi-sided shapes. 

This filter includes a pop-up that can be used to match the different looks that can be achieved in the physical world based on the lens aperture setting. This pleasing optical result is referred to in photographic terms as Bokeh.

The BCC Lens Blur filter also includes a comprehensive depth of field (Z-Depth) option, whereby a separate image or an ML Depth Map can be used to control the depth and position of the focus field.

Presets and the FX Editor

The FX Editor provides a convenient way to store and retrieve factory installed and/or user generated filter presets. To select a preset, open the FX Editor interface and pick one from the Presets panel. Click the apply button in the FX Editor to return to the host user interface.

To save a custom preset, click the “Create Custom Preset” icon in the top right corner of the parameter list, next to the filter name, set a name for the new custom preset in the dialog that appears and click done.

Mocha Mask and Track

Most Continuum effects include a comprehensive suite of matte and masking tools that can be used to restrict the filter effect to a user defined region in the filtered source. This matte or mask is generated from within the filter effect via the integrated Mocha spline mask and planar tracking option and / or the integrated Pixel Chooser matte and mask option. 

With Mocha, users can create a mask shape and track that mask shape over the course of the filtered source. With the Pixel Chooser, users can generate mattes based on a user selected channel, luma or RGB for instance, from the filtered source, and a suite of tools are included in the Pixel Chooser to modify the channel input. 

The Pixel Chooser also includes a set of easy to use basic geometric shapes, such as rectangles and ovals. Also included in the Pixel Chooser is a full featured gradient generator, an AI powered depth map generator model and an AI powered face detection model that automatically propagates the generated face mask across the duration of the filtered source. Mocha masks and Pixel Chooser mattes can be combined together, either additive or subtractive.

Note that Mocha can also be used for driving geometric parameter data such as a filter point pick picker location, which is a separate use of Mocha and is covered in the Mocha Motion Tracker documentation.

For more information on Mocha and the Pixel Chooser, Click Here.

Compare Mode

The Compare Mode option offers a split screen view with the original on one side and the modified image on the other side. 

For more information on the Compare Mode, Click Here.

Filter Parameters

Size

Allow Resizing (checkbox) 

View (pop-up): Use to set the output from the filter and to view the different stages of the effect. The pop-up menu includes the following options:

• Output
• Iris
• Map Layer Orig
• Z Map
• Focus Map
• Mask Defocused Pixels
• Noise
• Noisy Iris

Iris Scale: Used to set the size of the blurred highlight shapes.

Iris Scale X: Scales the blurred highlight shape along the X axis.

Iris Scale Y: Scales the blurred highlight shape along the Y axis.

Blur Alpha (checkbox): When enabled, will also blur the alpha channel in the filtered source

Gamma: Used to control the gamma of the highlight shapes in the image.

Iris Group

Contains parameters to control the shape and look of the generated highlights.

Iris Shape (pop-up): This menu is used to set the iris shape.

• Circle:­ Generates circular highlights (lens at maximum aperture /wide open.)
• 3 -­ 16 Sides:­ Sets the number of sides representing the number of shutter blades in the lens.

Iris Rotation: Used to rotate the angle of the iris.

Bokeh: Used in conjunction with the Iris Shape pop-up to define the shape of the out of focus highlights.

Bokeh Shading: Used to set the level of shading of the inner region of the highlights.

Blur Map Group

Contains parameters to enable and control Z-Depth compositing within the filter.

Map Type (pop-up): Used to set the mode of the Z-Map function:

• None
• Depth Map ML
• Z Layer

Map Layer (pop-up): Use to select a layer from the timeline for use as the depth map

Depth Map ML Group

Model (pop-up): Used to select the desired depth map model and includes 3 user selectable options:

• Faster: less precise but fast depth map model
• Better: more precise depth map model, slightly slower than the Faster model
• Best: the most precise depth map model, slightly slower than the Better model

Mapping Mode (pop-up): Used to determine how the AI model will be used to determine depth in the filtered source. This menu includes the following three options:

• Scaled: Provides the user with a single Scale control for tuning the returned depth map result. Low values in the corresponding Scale parameter will generate more transparency, while high values in the Scale parameter will introduce more opacity to the result.
• Min/Max: Automatically rescales the depth map to span the full range from black to white
• Guided: Generates a depth map based on user defined start and end points in the image. A pair of position points, Guide Near and Guide Far, are placed over regions that are nearest to and farthest from the camera, which provides a start and end point for the depth map generation.

Scale: Available when Scaled mode is selected and used to tune the white scale of the depth map result. Low values in this parameter will introduce more transparency, high values introduce more opacity.

Guide Far: Available when Guided mode is selected and used to set the far point for the depth map

Guide Near: Available when Guided mode is selected and used to set the near point for the depth map

Brightness: Used to increase or decrease the brightness in the generated depth map

Contrast: Used to increase or decrease the contrast in the generated depth map

Gamma: Used to increase or decrease the gamma in the generated depth map

Level Far: Used to tune the Far (furthest from the camera) region of the generated depth map

Level Near: Used to tune the Near (closest to the camera) region of the generated depth map

Invert: Used to invert the depth map

Refine Depth Group

This group includes a set of brightness/contrast/gamma controls to separately refine the near/mid/far regions with user definable range and position settings for each region.

Enable: Enables/Disables the Refine Depth Group parameters.

Far Sub Group: Used to tune the far regions in the depth map (furthest from the camera)

• Position: Used to set the mid-point in the Far range
• Range: Used to define the size of Far range
• Brightness: Used to control the brightness in the maps Far region
• Contrast: Used to control the contrast in the maps Far region
• Gamma: Used to control the brightness in the maps Far region

Mid Sub Group: Used to tune the mid regions in the depth map

• Position: Used to set the mid-point in the Midtone range
• Range: Used to define the size of Midtone range
• Brightness: Used to control the brightness in the maps Midtone region
• Contrast: Used to control the contrast in the maps Midtone region
• Gamma: Used to control the brightness in the maps Midtone region

Near Sub Group: Used to tune the near regions in the depth map (closest to the camera)

• Position: Used to set the midpoint in the Near range
• Range: Used to define the size of Near range
• Brightness: Used to control the brightness in the maps Near region
• Contrast: Used to control the contrast in the maps Near region
• Gamma: Used to control the brightness in the maps Near region

Matte Tools Group: This group includes a set of parameters to fine tune the matte that  is generated from the Depth Map result.

Enable: Used to enable / disable the refine matte controls

Matte Type: Select one option from the list to fine tune the matte

• Levels: Uses depth map levels directly as set by earlier phases
• Threshold: Exposes Threshold and Softness control sliders for selecting all levels above or below a particular threshold
• Range: Exposes Range From and Range To matte control sliders for selecting an arbitrary range of levels
• Slice: Exposes Slice Center, Slice Width and Softness matte control sliders for isolating a range of pixels around a particular level

Threshold: Used to set the center point for pixels that are either black or white

Range From: Used to set the starting range (brights) of pixels to be included in the matte

Range To: Used to set the end range (darks) of pixels to be included in the matte

Slice Center: Used to isolate a range of pixels around a particular level to be included in the matte

Slice Width: Used to define the width (in terms of levels) of the Slice range

Softness: Used to soften the transition of the threshold, range, and slice boundary regions

Choke: Used to choke or spread the matte

Blur: Used to blur the matte

Invert Matte: Used to invert the depth map

Channel pop-up: Used to select a channel from the layer that is used as the depth map image with the following options:

• Luminance
• Alpha
• Red
• Green
• Blue

Invert Z (checkbox): enable to flip the Z map

Smoothness: Higher values produce a smoother blur result.

Focal Point: Used to set the point along the Z axis which is in focus.

Depth of Field: Controls the depth of the focus field, or the amount of pixels that remain in focus.

Z Gamma: Used to adjust the gamma levels of the Z Map input image.

Near Scale: Use to increase the size of the blur applied to the pixels that are closest to the camera.

Far Scale: Use to increase the size of the blur applied to the pixels that are farthest from the camera.

Noise Group

Contains parameters to control the level of noise in the highlights.

Noise Intensity: Used to set the amount of noise in the highlights.

Noise Scale: Used to set the size of noise structure in the highlights.

Noise Stretch: Used to distort the noise structure in the highlights.

Noise Blur: Used to smooth the generated noise in the highlights.

Noise Seed: Used to set the random seed that controls the noise structure in the highlights.

Highlights Group

Contains parameters to control the highlights that are generated by the filter.

Highlight Mode (pop-up): The options in this menu are used to determine the way the highlights are composited into the image:

Luma: Boosts the Luminosity values of the highlights.

Luma Boost to White: Boosts the Luminosity values and desaturates the highlights.

RGB Glow: Boosts the RGB and Saturation values of the highlights.

RGB Max: Boosts the RGB values of the highlights.

Highlight Boost: Used to set the intensity of the highlight boosting – higher values result in brighter highlights.

Highlight Threshold: Used to set the cutoff point for highlight boosting.

Suppress Threshold: Used to set the intensity of the shadow boosting – higher values result in darker shadows.

Boost Soften: A slope control that softens the highlight and shadow boosting effect.

Post Group

Contains parameters for post processing the image.

Blend Mode (pop-up): Contains 25 blending modes for compositing the filtered result with the original image.

Blend Mode Mix: Used to create a blend between the current blend mode and the Normal blend mode.

Mix with Original: Use to blend the filtered result with the unfiltered source.

GPU Rendering

Allows for the selection of GPU or CPU software rendering.

• Default: Uses the GPU to render the effect.
• 16 bit float
• 32 bit float
• Disabled: disables GPU rendering and allows for CPU software rendering.