Hi Jez,
Sounds like these may have possibly been originated on film, in which case
I would always seek to go back to the negative/positive in order to get the
most out of the image.
As others have said 600 dpi won't get you very far, it's fairly easy to
calculate that a 6x4 photo scanned at 600dpi will give you 3600 x 2400
pixel image (600 x 6 / 600 x 4), which when printed at 300dpi will output
at 12 x 8", so you'll get to A4, but not much further.
I'd speak to David Rowan at the Birmingham Museums Trust, he's the
photographer there who may be able to help further, he's also freelance.
Tony
Tony Harris
Digital Media & Photography Manager
Government Art Collection
DCMS, 4/29, 100 Parliament Street, London, SW1A 2BQ
artcollection.culture.gov.uk | 07866 953048
@govartcol <https://twitter.com/GovArtCol> | /govartcol
<http://www.facebook.com/govartcol> | @govartcol
<https://www.instagram.com/govartcol/>
The Government Art Collection is currently preparing to move the
Collection to new premises and is not undertaking any new displays. Normal
operations will resume in Spring 2020.
On Tue, 11 Feb 2020 at 08:07, Jez Collins <[log in to unmask]>
wrote:
> Good morning all
>
> This is a relatively simple question but one that I'm struggling to get
> some simple, definitive advice so I hope someone can help.
>
> I have a number of photographs, 6 x 4 and 7 x 5 (and a couple of larger
> ones) that I have been lent as part of a project I'm doing. I'm scanning
> them all and I want to use to some of the scanned images for a public
> exhibition. I'm thinking the sizes for the exhibition will be a mix of
> A4/3/2/1 and maybe A0.
>
> Could anyone one advise at what DPI I need to scan these at please? I'm
> reading a lot of different advice from 600 dpi will be sufficient to 'scan
> as large as you can'. I have access to a Plustek OpticPro A320L scanner so
> it's a relatively good scanner.
>
> Any help would be most appreciated.
>
> Thanks in advance.
>
> Jez
>
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