Scharky's test is wonderful. Good job!!
In my computer thick mode looks too edgy, like Antoine says.
I'll trie record another tests.
I'm very confuse.
Thanks for the tests and advices.
As far as resolution goes, our existing understanding is accurate, and Antoine's grabs match Stefan's: THIN is the highest-resolution, and THICK is the lowest.
Interestingly, MID seems to be nearly identical to THICK.
On some of Antoine's "real world" pictures, MID and THICK do occasionally look better than THIN. But it seems to be unrelated to resolution, it appears that the MID shots had a little higher contrast, a situation which could make the picture look sharper.
So, let's back up: the menu settings are accurate, THIN is indeed maximum-high-resolution thin-line detail, and THICK is the lower-resolution, anti-twitter setting for interlaced TV's. And MID looks awfully high-res too.
No doubt, "thick" is far behind in terms of resolution.
As for Thin and Mid, the "sharper" mid image that i saw was in fact due to a slight increase in contrast in very fine details.
Side by side, "mid" and "thin" had about the same resolution, vertical res in the circle approaching 480 lines for both (not exactly because my shots were not 100% correctly framed), but the details are slightly more "contrasty" with Mid.
Thick mode melted at a mere 350 lines of vertical res...ouch !
Then i took "mid" and "thin" images and looked at the waveform monitor, and quite interestingly, it confirmed the slighly increased contrast in fine detail (whiter to blacker), and all other info were virtually identical.
I did some field testing myself with thin and mid....mid, as you say, increased the contrast/sharpness somewhat but the overall picture was not as pleasing as thin...so I'm back to thin mode again
finally found the difference between "mid" and "thin".
they have the same resolution, both of them much better than "thick".
"mid" produced the exact same result as you would achieve by applying a small sharpening effect over "thin" footage.
also, to my eyes, increasing the v detail level with "thin" (not with the "mid" yek !) setting produced a beautifull image too.