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000270_owner-lightwave-l _Tue Jan 24 08:19:38 1995.msg
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From: Kenneth Jennings <kenneth@daffy.aatech.com>
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To: lightwave-l@netcom.com
Subject: Re: Mac compatibility
Date: Tue, 24 Jan 95 7:14:53 EST
Message-ID: <9501240714.aa24839@daffy.aatech.com>
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Jeric@cup.portal.com nearly flamed off about Mac compatibility:
> Joe Angell writes:
>>Don't mean to be rude about this, but if you RTFM, it should help. On
>>page 46 of the Toaster 4000 manual (LW section) it has the answer: select
>>"Square Pixels" from the little pop-up menu that usually says Toaster/D2.
>>That'll use square pixels. I guess you can't blame Macs for being the
>>least compatible of computers -- but you can blame Apple...
>-- Joe
>This is incredibly wrong-headed. Square pixels are a boon to those
>working in 2D animation--ever rotate a brush in DPaint?
We're getting a little testy. (no coffee this morning? :-)
The Mac was aimed at the DTP market and consequently, has
a 1:1 aspect ratio to make WYSIWYG more or less true when
printing on lasers printers. (Hmmm. Or is the reverse
true... The DTP niche munged onto the Mac, because it
happened to have square pixels?)
Anyway, this 1:1 aspect is a *good thing* when working
with print output. It's a *bad thing* when working with
video.
>For the Amiga to slavishly have rectangular pixels like the IBM piece
>o' crap was a serious shortcoming.
NOT! The Amiga was designed for video applications, so as a
result, it's preferred display modes conform to video
standards -- interlaced 15KHz instead of VGA 31KHz, though
that's also possible on newer (post OCS) machines.
The horizontal scan rate/pixel delineation on the Amiga
is tied to the NTSC scan/frequency rate. A low resolution
pixel is exactly 1/2 an NTSC color clock. (Hi res is 1/4
a color clock.) So, since resolution is measured in scan
lines vertically, and color clocks horizontally, the
"squareness" of the pixels is limited by NTSC.
As a result, by conforming to NTSC the Amiga is much better
suited to video apps. Though, if you don't like the 11:13
pixel aspect, you can always use a multisync monitor and
play with the sizing to get square pixels on screen. (Which
is what I do for DTP apps on the Amiga.)
>One can slam the Mac for many things, but square pixels ain't one of
>them. (If Apple had priced them competitively, the Amiga would have been
>slugging it out with Macs instead of clones, and Bill Gates would be
>building a MUCH smaller house.)
***********************************************************************
* (OOOOO) Jeric@cup.portal.com | Synergy Graphix & Animation *
* (OOOOOOO) Welcome to Seattle! | Film and Video Productions *
* \\\\\\ Have a latte'! |Technical Subjects Our Specialty! *
* \\\\\\ Or else! | (206) 283-3540 *
***********************************************************************
+-------------------------------------+ +-------------------------------------+
| Kenneth Jennings, Amiga Advocate | | ====== Equine Video Studios ====== |
| "Happy I'm not a PC/Mac lemming." | | ====== & SyntheToonz, Inc. ====== |
| kenneth@daffy.aatech.com | | >>>>>>>> Lynn, Video Maven <<<<<<<< |
| Applied Automation Techniques, Inc. | | > Ken, Computer Animation Artiste < |
| Obviously not the opinions of AAT. | | >>>>>>> Bruno The Wonder Dog <<<<<< |
+-------------------------------------+ +-------------------------------------+
"You'd think that PC and Mac users willing to gut their systems to achieve the
Amiga's level of performance would just save themselves the trouble and buy
Amigas in the first place. But they don't know any better -- they read BYTE."