Originally Posted by JayNYC
Steve, just checked both V50 and VP50pro manuals and neither mention the 2 ISF patterns I reference above. Anybody have any insight here?
I may not be familiar with the patterns to which you are referring. The patterns that I thought you were asking about are described on pages 15 and 16 of the VP50pro manual:
The ‘Brightness/Contrast’ test pattern will assist you in setting up both the brightness (black level)
and contrast (white level) of the display. The ‘Brightness/Contrast’ test pattern is composed of 4
quarter-screen blocks. Two of the blocks have a background level of standard black and the other
two blocks have a background level of standard white. Embedded in the black blocks are 3 bars.
One is 4 IRE below black (blacker-than-black), one is 1 IRE above black, and the third is 2 IRE above
black. Embedded in the white blocks are 3 bars. One is 1 IRE above white (whiter-then-white), one
is 1 IRE below white, and the third is 2 IRE below white. The bottom two blocks differ slightly from
these levels. For the bottom two blocks, the blacker-than-black is at the lowest possible luma level
and the whiter-than-white bar is at the highest possible luma level. When the brightness and contrast
are adjusted correctly, you should be able to see the 1 IRE and 2 IRE above black bars on the black
background and the 1 IRE and 2 IRE below white bars should be visible on the white background.
When the brightness is adjusted correctly, black objects should appear ‘black’ with the details still
intact and lighter areas should be ‘light’, not gray, with the details still intact. When the contrast is
adjusted correctly, white objects will appear ‘white’ with the details still intact. Because the contrast
settings can affect brightness settings we recommend that you check the brightness setting after
making this adjustment.