Hey, folks. Late last year, I started playing around with my cheap video digitizer (Composite/S-Video) to get it to capture RGB output from my game systems. I did this by stripping the sync signals from the comp+sync line, and joining it with one of the R, G, B, components, and capturing each component one-by-one. The resulting capture is quite nice:
Composite --->RGB captured from my Famicom Titler
However, as we know, the colours are a bit off from the regular NTSC NES' PPU. I checked the brightness of the grey levels of the RGB PPU and compared them with the results Kevtris posted in this thread. Here's what I plotted, quickly:
Simply, even though pure white and pure black are bright and dark enough, respectively, the colours (greys, for now) in the middle are too bright. What I want to know is if there is a way (through electronic components) to lower the dark tones, and maybe the midtones, but keep the brightness at its maximum (ie: like a gamma correction), kinda with a curve like this:
Either one of the purple lines would be what I want to achieve.
As far as I understand, simply adding resistors lowers the overall brightness:
So, any ideas?
Composite --->RGB captured from my Famicom Titler
However, as we know, the colours are a bit off from the regular NTSC NES' PPU. I checked the brightness of the grey levels of the RGB PPU and compared them with the results Kevtris posted in this thread. Here's what I plotted, quickly:
Simply, even though pure white and pure black are bright and dark enough, respectively, the colours (greys, for now) in the middle are too bright. What I want to know is if there is a way (through electronic components) to lower the dark tones, and maybe the midtones, but keep the brightness at its maximum (ie: like a gamma correction), kinda with a curve like this:
Either one of the purple lines would be what I want to achieve.
As far as I understand, simply adding resistors lowers the overall brightness:
So, any ideas?