NTSC - what a bunch of junk

[Zac67]

PAL uses 50 Hz, NTSC 60 Hz vertical refresh - so NTSC means less flicker. If flicker increases instead it's due to your monitor not being able to handle it (or some weird hardware defect).

[Zac67]

All my miggies are hardware switchable PAL/NTSC - actually it's the only way to make an A2024 run PALish (1024x1024) or NTSCish (1024x800) modes.

[edit]
On the A1200 you can remove R203 and replace it with a switch - open: PAL, closed: NTSC

[Zac67]

PAL60 is composite video using PAL color modulation combined with NTSC vertical timing (e.g. used for somewhat PAL-compatible playback of NTSC video). When you look at RGB video - where there's no color modulation - PAL / NTSC only differ in timing. So a PAL Amiga running in NTSC mode actually does output PAL60.

[Zac67]

This isn't quite as true as you make out. Certainly the time periods involved would mean PAL was more "flickery". However, PAL has a better resolution so the size of the flicker is less.

Sounds slightly esoteric to me.
Which "time periods" are you referring to? Can't get the "size of the flicker" thing either, sorry...

It also matters of course, the nature of whatever you are viewing. A Workbench screen is generated by the Amiga directly. If one was talking about a video the matter of source material, standards conversion, drop frames and all make the issue far more complex, but I'm not going to go into that right now, I'm far too busy today.

Filmed video material generally is less susceptible to flicker as vertical contrast will usually be less. A computer output can have extreme contrast between odd/even lines which will cause severe flicker due to the brightness difference.

[Zac67]

The time periods I refer to are the one 50th and one 60th of a second timing for the fields for PAL and NTSC respectively.

Re-reading the post, I must've got you wrong here (think I read "PAL is less flickery here").

However, I still don't follow you on the "physical height" of the pixel. Sure, PAL has a higher resolution, but on a CRT, a scan line drawn is always the same height and covers the same area. On PAL there are more lines (tighter spacing) than on (full frame) NTSC, so the pic appears slightly brighter - which means more contrast & more flicker.

On an LCD it's another story, but then again - that's a progressive display and shouldn't be flickering at all.

[Zac67]

Well, let's see...
Noodles
Tomatos
Salad
Chicken

and

Paella
Asparagus
Lamb chops

I'm with PAL, obviously...
(desperately trying to return to topic )