Pixel-perfect emulation and artistic intent

[Aaendi]

Did all Genesis systems have ugly rainbow artifacts on dithered patterns?

I'm not sure how this could be avoided. NTSC composite signals will always have rainbowing on thin lines, even with a great comb filter.

The only real way an NTSC composite signal would get rid of it, would be to low pass filter the luma signal by an entire pixel.

[Aaendi]

Something that pulls my hair out is when emulators and video codecs don't properly emulate "interweving" properly. Here are 3 things about interweving that people never get right.

1) Sometimes even and odd fields are NOT the same frame.
2) On a real CRT, the scanlines overlap eachother.
3) On a real CRT, the image from one field takes a little while to fade away, and are still visible when the second field is being scanned.