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Re: [OM] Question for you experts

Subject: Re: [OM] Question for you experts
From: "piers@xxxxxxxx" <piers.hemy@xxxxxxxxx>
Date: Sun, 6 May 2012 00:56:20 +0100
Each of which simplfies to 1:1.42 :-)

Piers

On 05/05/2012, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
> Thanks.  I hadn't realized that.  Ax where x is even is 3:2, Ax where x
> is odd is 4:2.8.
>
> But not having A size printing papers I've now accumulated yet another
> very interesting but useless to me piece of info.  :-)
>
> Chuck Norcutt
>
>
> On 5/5/2012 12:15 PM, Frank Wijsmuller 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.
>>>
>>>
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