Date   : Wed, 14 Feb 2001 10:41:03 +0000
From   : Paul Wheatley <p.r.wheatley@...>
Subject: Re: Aspect ratio of BBC screen?

Mark,

Mark de Weger wrote:
> 
> > "Mark de Weger" <mark@...> wrote:
> > > Can anyone tell me what the aspect ratio of actual BBC screens is? (I
> > > don't have a BBC at hand to test.) I thought I inferred from old Acorn
> > > documentation it's 1.25. However, in the emulators (BeebEm at least)
> > > it's 1.33. And then I read somewhere it varies according to the screen
> > > mode. Help!
> 
> After the different answers I got, I did some measurements myself.
> 
> First, I measured a number of screen shots from magazines. The average
> aspect ratio was 1.24 (with quite a standard deviation--aspect ratios
> varying from 1.13 to 1.35, probably due to different monitor settings).

I don't think you want to trust screenshots in magazines for any measurements
as precise as that! Having written for Acorn User for several years (albeit
in the RiscOS era) it was quite unusual to see a screenshot reproduced
accurately on the finished page....

Paul
-- 
Camileon Project Officer
http://www.si.umich.edu/CAMILEON/
0113 233 5830