Thank you so much, Derek! You have gone to a great deal of trouble to answer my 
question – and have certainly taught me a lot. I do appreciate your help.

Gilly



On 6 Dec 2012, at 12:25, Derek Cross wrote:

> Regarding image resolution, rule-of-thumb – for commercial printing, allow 
> 300 pixels per inch (PPI)) . This allows two pixels per line screen. For 
> inkjet printing you can come down to lower resolutions - maybe 200 PPI.
> 
> To work out the optimal size you can print divide the image's pixel 
> dimensions by the proposed PPI. In the above example, dividing 2804px by 300  
> and 2035 by 300 = 9.34inchs x 6.78 inches (237 172mm). As A5 is 210 x 172 
> this would be adequate for an A5 print and would probably scale up to A4 
> satisfactory.
> 
> Derek
> 
> 
> On 6 Dec 2012, at 10:35, David Ransom <[email protected]> wrote:
> 
>> Hi Gilly,
>> 
>> I would say that it would print at good quality at about A5 size and 
>> probably still acceptable at A4, depending of course on the quality of the 
>> photograph.
>> 
>> David
>> 
>> 
>> On 6 December 2012 10:30, Gillian Snoxall <[email protected]> wrote:
>> Can anyone tell me what is the maximum size photo I could have printed from 
>> the image described below?
>> 
>> [see attached file: Screen Shot 2012-12-06 at 10.23.17.png]
>> 
>>  Gilly
>> 
>> 

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