Christie Mirage S+14K User Manual page 95

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Optional Blinders
If desired, you may wish to install the optional mechanical blinders at the projector
lens. These adjustable blades help to blend blacklevels along edges of the image, and
are available in a separate kit.
Since the blinders and Edge Blending menu controls are intended to complement
each other, with blinders primarily affecting blacklevels and software primarily
affecting whitelevels, together these components produce the best blends possible for
any type of flat image. Or, depending on your projector model and your application
needs, you may prefer to utilize only the standard software controls—for example,
you may find that the edges of white or very light images can be well-blended
without blinders. In other more unusual applications with only a very small area of
overlap, you may need only the blinders.
Standard edge blending software controls are located in the 2-page Edge Blending
submenu access via Configuration menu, then Geometry and Color submenu, then
Edge Blending. The More option opens the second page of the Edge Blending
submenu.
Main Functions
Use standard edge blending controls to set the precise width, shape and midpoint you
need to blend overlapping edges together smoothly.
determines how much area is used for blending along an
Blend Width
overlapping edge. Slidebar values represent the number of 8-pixel steps used
for the blend. For example, a setting of "3" creates a blended edge 24 pixels
wide. A setting of "0" signifies no blending. For best results in most
applications, use a blend width of 16-48 steps (128-384 pixels).
Ranges: 0-80 horizontal, 0-60 vertical.
determines the rate
Blend Shape
of roll-off across the blend width,
i.e. how quickly the white levels
across the blend change from
light and dark. Increasing the
Blend Shape setting accelerates
the rate of change at both
extremes so that less of the region
appears mid-gray (see Figure 3.
34). Decreasing the Blend Shape
setting slows the rate of change
so that more of the region appears
mid-gray. For most applications, this subtle control is best left close to 50.
Figure 3. 34. "Shape" Examples
Roadster / Mirage S+ User's Manual
OPERATION
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