Blocky ?

blade002 · 17 May 2006, 16:09

Im about to get a screendoubler for my A1200, but someone on another forum mentioned that if your using one, it can make your Games looks blocking and unlike they orginally were. Is this true?.

He says they are great for apps, but he uses his TV with a SCART for his Amiga games, since he says the doubler makes them crap.

keropi · 17 May 2006, 16:54

yeah right....

with a scandoubler the image is sharper and looks like it was meant to.
with a tv/tv-monitor , the quality is inferior and it blurs. It is the blur that made you friend say what he did. it is like applying a filter... some like it....
for me the BEST expansion u can get after an accelerator is the scandoubler/flickerfixer. then a gfx card...

musashi5150 · 17 May 2006, 16:55

Quote:

Originally Posted by keropi

the BEST expansion u can get after an accelerator is the scandoubler/flickerfixer.

I second that, assuming you already have an HD

Although network adapter is nice too....

z00mba · 17 May 2006, 18:31

And a CD-ROM drive maybe ;p

patrik · 17 May 2006, 18:49

With a scandoubler when using non-interlace screenmodes, the scanlines between each row of pixels on a CRT-monitors will be much smaller (because of the higher horizontal refresh in combination with that each line drawn twice with the scandoubler).

If you compare two 14 inch-monitors - one connected with scandoubler, one connected to the regular 15kHz output, the former will have absolutely no scanlines, while the latter will have visible scanlines and less blocky looking graphics, as the pixels really are smaller because of the scanlines.

If the 15kHz output is blurry when using an RGB-lead, a bad monitor/tv is used.

Btw, don't forget that most scandoublers for AGA-machines can't handle 8-bits per colour-channel, giving the games more or less OCS/ECS look. The only scandoublers/flickerfixers which can handle 8-bits per colour-channel are the DBlScan 4000, the Compserv/Arxon ScanDoubler (II) and the flickerfixer on the Picasso4 graphics card.

blade002 · 18 May 2006, 07:42

Quote:

Originally Posted by keropi

yeah right....

with a scandoubler the image is sharper and looks like it was meant to.
with a tv/tv-monitor , the quality is inferior and it blurs. It is the blur that made you friend say what he did. it is like applying a filter... some like it....
for me the BEST expansion u can get after an accelerator is the scandoubler/flickerfixer. then a gfx card...

Yeah im fully aware that the TV blurs the Image, since i used a TV for first few years on the Amiga, but then i later got a Phillips Monitor which of course made it more pixelated because it was much clearer. But the impression i got from the guy who made the post, was that its far more inferior looking for Games when you use a screendoubler with your monitor.

But thanks anyway

blade002 · 18 May 2006, 07:42

Quote:

Originally Posted by patrik

With a scandoubler when using non-interlace screenmodes, the scanlines between each row of pixels on a CRT-monitors will be much smaller (because of the higher horizontal refresh in combination with that each line drawn twice with the scandoubler).

If you compare two 14 inch-monitors - one connected with scandoubler, one connected to the regular 15kHz output, the former will have absolutely no scanlines, while the latter will have visible scanlines and less blocky looking graphics, as the pixels really are smaller because of the scanlines.

If the 15kHz output is blurry when using an RGB-lead, a bad monitor/tv is used.

Btw, don't forget that most scandoublers for AGA-machines can't handle 8-bits per colour-channel, giving the games more or less OCS/ECS look. The only scandoublers/flickerfixers which can handle 8-bits per colour-channel are the DBlScan 4000, the Compserv/Arxon ScanDoubler (II) and the flickerfixer on the Picasso4 graphics card.

Thats what i was trying to find out!!!.. Cheers!!... i do appreciate you taking the time to explain it.

Jope · 18 May 2006, 08:00

Perhaps your friend was talking about the flickerfixer combing effect that sideways moving objects experience, if they are updated every frame?

patrik · 18 May 2006, 15:48

@Jope:

The combing effect only appears with interlaced screenmodes - as only every second line is updated per screen-redraw then.

But as most games doesn't use interlaced screenmodes in combination with much animation, they are minimally affected by that.

17 May 2006, 16:09	#1
blade002 Zone Friend Join Date: Dec 2005 Location: Australia Age: 50 Posts: 2,616	Blocky ? Im about to get a screendoubler for my A1200, but someone on another forum mentioned that if your using one, it can make your Games looks blocking and unlike they orginally were. Is this true?. He says they are great for apps, but he uses his TV with a SCART for his Amiga games, since he says the doubler makes them crap.

17 May 2006, 18:49	#5
patrik Registered User Join Date: Jan 2005 Location: Umeå Age: 43 Posts: 922	With a scandoubler when using non-interlace screenmodes, the scanlines between each row of pixels on a CRT-monitors will be much smaller (because of the higher horizontal refresh in combination with that each line drawn twice with the scandoubler). If you compare two 14 inch-monitors - one connected with scandoubler, one connected to the regular 15kHz output, the former will have absolutely no scanlines, while the latter will have visible scanlines and less blocky looking graphics, as the pixels really are smaller because of the scanlines. If the 15kHz output is blurry when using an RGB-lead, a bad monitor/tv is used. Btw, don't forget that most scandoublers for AGA-machines can't handle 8-bits per colour-channel, giving the games more or less OCS/ECS look. The only scandoublers/flickerfixers which can handle 8-bits per colour-channel are the DBlScan 4000, the Compserv/Arxon ScanDoubler (II) and the flickerfixer on the Picasso4 graphics card. Last edited by patrik; 17 May 2006 at 23:03.

18 May 2006, 15:48	#9
patrik Registered User Join Date: Jan 2005 Location: Umeå Age: 43 Posts: 922	@Jope: The combing effect only appears with interlaced screenmodes - as only every second line is updated per screen-redraw then. But as most games doesn't use interlaced screenmodes in combination with much animation, they are minimally affected by that. Last edited by patrik; 18 May 2006 at 17:39.

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17 May 2006, 16:54	#2
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	yeah right.... with a scandoubler the image is sharper and looks like it was meant to. with a tv/tv-monitor , the quality is inferior and it blurs. It is the blur that made you friend say what he did. it is like applying a filter... some like it.... for me the BEST expansion u can get after an accelerator is the scandoubler/flickerfixer. then a gfx card...

17 May 2006, 18:31	#4
z00mba Registered User Join Date: Apr 2006 Location: Fr Age: 47 Posts: 185	And a CD-ROM drive maybe ;p

18 May 2006, 08:00	#8
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	Perhaps your friend was talking about the flickerfixer combing effect that sideways moving objects experience, if they are updated every frame?

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