The ratio is always sqrt(2):1 which of course is 1.414:1
So inbetween 1.33:1 and 1.5:1 and a reasonable fit for both.
On 05/05/2012, Frank Wijsmuller <wijsmuller@xxxxxxxxx> wrote:
> Actually, because the A-x formats *double* each iteration in only one
> direction (*not* proportionally 'enlarged'!), they serve both 2x3 and 3x4
> sensors...
> ....
> A5 ~ 4x3 (210x148mm - 4:2,8)
> A4 ~ 3x2 (297x210mm - 3:2,1)
> A3 ~ 4x3 (420x297mm - 4:2,8)
> A2 ~ 3x2 (594x420mm - 3:2,1)
> ....
>
> That makes it a draw ;-)
>
> Best, Frank.
>
>
> 2012/5/5 Wayne Harridge <wayne.harridge@xxxxxxxxxxxxxxxxxxx>
>
>> 4/3 is also a good fit for A4, A3,... paper sizes.
>>
>>
> --
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
>
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|