Does the NES have a low-pass filter? What about NES RGB?

[erik343]

Just wondering if the NES uses a low-pass filter (without modification)?

I was also wondering if a NESRGB modded NES bypasses this low-pass filter?
Such as this model: https://www.ebay.com/itm/Ultimate-RGB-N ... 663.l10137

Does the low-pass filter degrade image quality?

Thanks.
Erik W.

[Frank_fjs]

LPF is mostly a good thing. It's usually only detrimental when you have more than one LPF in use, e.g. several stacked on top of each other.

Depends on your monitor (LCD / CRT etc) and what other devices you have in the chain, scalers such as the OSSC for example, as to whether the LPF will be beneficial or detrimental.

[erik343]

I have the XRGB-mini Framemeister with an NES and SNES hooked up.

[erik343]

Does anybody know if the NES, without modification, incurs a low-pass filter?

I found out that the NESRGB mod I found on ebay.com can turn this off!

I found the lpf is really only used to clean up noisy images!

Thanks.
Erik W.