digitally analyzed pixels of Colossus 2 recordings , from ref gray\color bar images
0best proc amp settings for Windows 10:
brightness 15
contrast 57
saturation 56
hue 50
hue 49 corrects the Yellow( kind of )
i am using hue at 50 .
color bars were ideal,..
Red bar source 255 0 0
Yellow bar source 255 255 0
gray bars were ideal ,...
250 250 250
32 32 32
The recorded levels were:
with hue at 49
Red 252 31 0
Green 0 206 17 less true
Blue 13 12 244 less true
Cyan 0 218 255
Magenta 255 41 231
Yellow 236 237 3 this yellow is more balanced
Black 1 1 1
( with hue at 50 )*
Red ( 255 28 3 )* visually , Red stays about the same .
Green ( 0 205 2 )* Green is more true
Blue ( 0 17 242 )* Blue is more true
Cyan ( 0 221 245 )*
Magenta ( 255 43 244 )*
Yellow ( 249 233 5 )* this yellow has more Red
Black 1 1 1
Column 1 Column 2
Live recorded
view view
gray gray
bar bar
levels levels
255 248 -7 ( down )
delta's
ideally all delta's should be "5"
250 244 248 - 244 =to D4
245 241 244 - 241 =to D3
240 234 241 - 234 =to D7
235 229 234 - 229 =to D5
230 225 229 - 225 =to D4
127 125 - 2
32 33 +1
28 28 0
24 24 0
20 20 0
16 16 0
12 13 +1
8 8 0
4 5 +1
0 1 +1
15 57 56 50 ( my best settings )
gives excellent tracking of darker gray levels( brightness 15 with contrast 57 ) .
gives good white levels that Delta track pretty good( contrast 57 ) .
color saturation levels NOT clipping( saturation 56 )
Green and Blue are more true( hue 50 )
i still have no idea why W_8.1 had such a different response .
no matter what proc amp settings are used , Capture with Colossus 2 will never be perfect .
14 58 60 49 ( Capture's default )
All dark gray bars track at - 1's and -2's are noticeably darker( brightness 14 ) .
white levels Delta track pretty good( contrast 58 ) .
color saturation might look more intense( saturation 60 ) color compression\clipping may occure .
hue 49 corrects yellow( at a reduced level ) ,... but then Green and Blue are less true .
how to evaluate the recorded levels of your capture card :
1. make reference gray bars image *.png from Microsoft Paint 15 gray bars , and with 16 12 8 4 0 over-lapping .
2. make reference color bars image *.png from Microsoft Paint RGB CMYK 7 color bars on one png image .
3. use Paint to view the gray bars image full window, and record the image using Colossus 2 , proc amp settings 15 57 56 50 .
4. use the Edit tab in Capture utility , to play the recording , Scrub the time-line to make it Pause .
5. use keyboard Shift-Print Screen to take a screen shot of the paused play .
6. paste the clipboard into Microsoft Paint ( no need to save to file )
7. use the eye dropper in Microsoft Paint to sample the recorded gray bars , and view the RGB values in "Edit colors" of Paint . log the RGB values into a *.txt NotePad file . only use the eye dropper on a bar that is inside of the Edit tab of Capture's view window .
8. do the same for the Color bar's image .
png files are ok to use. They are smaller and are No-loss compressed . ie; same quality as a bit-map image .
do NOT use Window's Photo Viewer , the pixel values will NOT be true .
important:
the pixel data here has nothing to do with what is seen on the TV\monitor . the pixel data is what got recorded into the *.ts file . The goal is to find the proc amp settings that gives the best recorded video file .
comment:
the recordings are never as vibrant as the Live view .
this video was recorded using 15 57 56 50 which is my best\top setup for Capture\Colossus 2 at VBR 14 Mbs.
at 1080p in game Graphic setting 9 ( MAX ) .
running Kaveri A10 7850k at 1.7 Ghz CPU clock , with Window's 10 .
uncompressed capture would be huge at 11 GB minute
1920 * 1080 * 3 * 30 = 186 MBs
186 * 60 = 11 gig Bytes per minute