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Camera Match Utility 1387
Total Passes—
The number of passes used to
generate the effect. Increasing this value c an
increase the effect’s accurac y, but at a cost of
rendering time. Default=12.
Duration (frames)—The number of f rames in t he
animation to which the motion blur effect will be
applied. Default=1.0.
Bias—Changes the blurring so that it appears
to derive more from frames before or after the
current f r ame. Range=0.01 to 0.99. Default=0.5.
By default, the blurring comes equal ly from frames
before and after the current frame; that is, a
blurred object appears at the center of the blurred
area. This is the closest to what an ac tua l camera
would capture. Increasing the Bias value mov es
the blurring behind the blurred object, in relation
to its direction of motion. Decreasing it moves the
blurring in fron t of the blurred object.
Extremevaluesmovemostoftheblurringvery
close to the blurred object, which makes it difficult
to see. For best results, use intermediate Bias
values in the range 0.25 to 0.75.
Pass Blending group
Themultiplemotionblurpassesareblendedby
dithering, which you can control by the parameters
in this group.
These con trols apply only to renderings of the
motion blur effect, not to previews in viewports.
Normalize Weights—Passes are blended with
random weighting to avoid artifacts such as
streaking. When Normalize Weights is on, the
weights are normalized, giv ing a smo other result.
When off, the effect is a bit sharp er but usually
grainier. Default=on.
Dither S trength—Controls how much dithering
is applied to t he rendered passes. Increasing this
value increases the amount of dithering, and can
make the effect grainier, especially at the edges of
objects. Default=0.4.
Tile Size—Sets the size of the p attern used in
dithering. This va lue is a percentage, where 0 is the
smallest tile, and 100 is the largest. Default=32.
Scanline Renderer Params group
These controls let you disable antialiasing or
antialias filtering w hen you render the multi-pass
scene. Disabling these rendering passes can
improve render time.
These con trols apply only to renderings of the
motion blur effect, not to previews in viewports.
Disable Filteri ng—When on, disables the filtering
pass. Default=off.
Disable Antialiasing—When on, disables
antialiasing. Default=off.
Came ra Match Utility
Tools menu > Camera Match
Utilities panel > Utilities rollout > Camera Match button
The Camera Match utilit y uses a bitmap
background photo and five or more special
"CamPoint" objects to create or modify a camer a
so that its position, or ientation, and field-of-view
matches that of the camera that or iginally created
the photo.
Procedures
The general process to follow in using Camera
Match is described in the following procedures.
To use camera matching:
1.
Load a bitmap as a background for the renderer.