Specifications

Appendix C Display Issues 247
room. Often, however, the best solution is to avoid large, dark areas in the
presentation altogether.
Thin, Dark or Bright Slivers A slightly darker or brighter sliver along the edge-blend area is often the result
of under or over-shooting the chip in the projector.
◆ NOTE: This problem is unusual when using DVI or HDMI interfaces, as those
interfaces allow direct pixel addressing, and often provide no control over
the image width or position.
Create a test image with a one or two pixel white edge. Put the image on an
auxiliary timeline set to perform above the edge blend. Adjust the projector so
that the image exactly fills the image area. Move the horizontal position of the
image to the left so the leftmost row of pixels just disappears, then move it back
so they reappear. Now adjust the image width to make the right edge of the
image fit the image area precisely. You may have to repeat the position and
width adjustments a couple of times, since changing one may affect the other.
Also ensure that the vertical position of the image shows the top and bottom
row of pixels. There’s usually no adjustment for the image height, but if there
is, you may want to check that also.