How to get an unstretched picture?

[Quagliarulo]

Hello.
With the current version of WinUAE, I am unable to get an unstretched picture in full screen (and in windowed mode too, if I don't use 720x568). It seems that I cannot disable aspect ratio correction: if I try, the result is the same as having aspect ratio set to 4:3. I hate this, as some lines and rows of pixels are doubled and some are not. With older WinUAE versions, I could get a centered screen, both in full screen and windowed modes. In windowed mode, I used to make the window very small, hiding the outer areas that weren't used, but now everything gets stretched inside. I also noticed that the "Centering" controls in the screen settings panel don't do anything in any mode.
Is there any way to get pixel-exact graphics in full screen? Can I get a centered picture instead of a stretched one when I change the window's size in windowed mode?
Thank you!

[TCD]

Set the filter to none. Otherwise choose the aspect ratio of your monitor (e.g. 16:10) and not the one you'd like to see (i.e. 4:3).

[andreas]

as some lines and rows of pixels are doubled and some are not

Yup. When working with ancient WB versions, it sometimes does look "washed out" and tampered with.

With older WinUAE versions, I could get a centered screen, both in full screen and windowed modes.

I know this "problem." Newer versions just require too much tweaking around, whilst older versions did not need that at all.
I bet it's roughly the same "problem" that I described here some weeks ago...
http://eab.abime.net/showthread.php?t=56404

I must admit this is the reason why I too use older versions to work or play (if possible) since it's just too much fiddling around to get a centered screen with no filter, no enforced aspect ratio "correction" and 100% clean letters.
TCD told me a way to get this done on my system, but yet it's just too much tweaking needed every time (in my book). I discovered that I can just use an older version and have to adjust nothing at all.

[TCD]

Originally Posted by andreas

I must admit this is the reason why I too use older versions to work or play (if possible) since it's just too much fiddling around to get a centered screen with no filter, no enforced aspect ratio "correction" and 100% clean letters.

You only have to do that once though.

[Quagliarulo]

I just succeded: centered screen, no stretching, in 800x600 full-screen. It happened by chance, though. I will try to understand what I did!

Edit: Just select "no scaling" in the list box below the button labelled "reset to defaults".