Hi Katherine,
Lots of very useful discussion on this subject in the Library of Congress site, referencing FADGI initiatives:
http://blogs.loc.gov/digitalpreservation/2014/05/comparing-formats-for-still-image-digitizing-part-one/
Although this one below is about JPEG2000 as a risky choice for preservation format, it highlights some interesting points in this area, for example the idea that 'Our future ability to read a file is a function of how widely it is used', which advocates for TIFF as the most widely used (I believe). Anyway, the link:
https://blogs.loc.gov/digitalpreservation/2013/01/is-jpeg-2000-a-preservation-risk/
For what it's worth, at the BFI we digitise photographic collections to TIFF and store on two data tapes (one LTO, one IBM) in two geographically separate libraries. But the same principle could be achieved with two robust hard disk drives, stored separately, and check summed often, and moved to new drives on a schedule (keeping of course the old drives until the next checksum and migration).
Recommend reading the LoC / FADGI stuff.
All the best,
Stephen
Sent from my iPad
> On 30 Mar 2016, at 20:06, Zak Mensah <[log in to unmask]> wrote:
>
> Hi,
>
> Not sure if we're helping here or confusing you/others more!
>
> 1 - save the TIFF files
> 2 - a backup is only a backup if the data can be recovered so 1 external hard drive with an average life of 6 years isnt a backup. Multiple backups is! i've seen archival drives used as tea coasters (seriously!)
> 3 - keep the RAW if you can but don't sweat it if this is impossible
> 4 - Document in a plain text file all the workflow and key info for resilience. If you left for any reason somebody in the future has some vague hope of sorting the mess out !
>
> Basically you NEED to save the TiFF files for preservation purposes but if you have the will power of Tony then keep the RAW too. RAW is propriety which should be considered but isn't the end of world. Will any of our colleagues in 50-200 years be able to open our RAW files.... or use our obsolete computers... The suggestion to seek specific advice from the repository you'll be using will give you clarity on our ramblings.
>
>
>
>
>
> Zak Mensah
> Head of Transformation
> Bristol Culture
> 0777 522 7272
> 0117 9223606
>
>
> Keep up to date with team digital
> http://www.labs.bristolmuseums.org.uk/
>
>
> ________________________________________
> From: Museums Computer Group [[log in to unmask]] on behalf of Katherine West [[log in to unmask]]
> Sent: 30 March 2016 14:04
> To: [log in to unmask]
> Subject: [MCG] RAW vs TIFF files
>
> Hello,
>
> I was hoping some of you might be able to give me some advice.
>
> I am working on a HLF project in the New Forest aiming to create a website which will be a portal to information on the New Forest. This includes digitising a large part of the New Forest Centre's museum and library collection to be uploaded to the website as well as forming a high quality digital archive.
>
> We have purchased a digital SLR camera and will be using it to digitise a range of objects, from maps to glass plate negatives and 35mm slides. We have a limited budget and will be storing digitised copies on the cloud and an external hard drive.
>
> We are currently discussing whether we should be saving the RAW files or whether TIFF files will be sufficient for a master digital archive. Our concern is that RAW files might take up too much space on our storage system, but also that we should be capturing the digital copies with as much detail and information as possible for the future.
>
> Has anyone else had any experience of this? Do other organisations often use RAW files instead of TIFF? What are the advantages either way? Any advice would be a huge help! Thank you.
>
> Katherine.
>
>
> Katherine West
> Digitisation Officer
> New Forest Knowledge Project
> Please note: My working days are Wednesday - Friday. I may not be able to respond to emails immediately outside of these days. Thank you for your understanding.
> New Forest Centre
> Lyndhurst
> Hampshire
> SO43 7NY
>
> Email: [log in to unmask]<mailto:[log in to unmask]>
> Telephone: 023 8028 6150
> Website: www.newforestcentre.org.uk<http://www.newforestcentre.org.uk/>
> Search for us on Facebook and follow @NFCentre on Twitter
>
>
> ****************************************************************
> website: http://museumscomputergroup.org.uk/
> Twitter: http://www.twitter.com/ukmcg
> Facebook: http://www.facebook.com/museumscomputergroup
> [un]subscribe: http://museumscomputergroup.org.uk/email-list/
> ****************************************************************
>
> ______________________________________________________________________
> Council services online: http://www.bristol.gov.uk/service
>
> Keep up to date with the latest council news and sign up to our monthly email newsletter: http://www.bristol.gov.uk/ournews
>
> Have your say on consultations and view our webcasts: http://www.bristol.gov.uk/consult
>
> ****************************************************************
> website: http://museumscomputergroup.org.uk/
> Twitter: http://www.twitter.com/ukmcg
> Facebook: http://www.facebook.com/museumscomputergroup
> [un]subscribe: http://museumscomputergroup.org.uk/email-list/
> ****************************************************************
****************************************************************
website: http://museumscomputergroup.org.uk/
Twitter: http://www.twitter.com/ukmcg
Facebook: http://www.facebook.com/museumscomputergroup
[un]subscribe: http://museumscomputergroup.org.uk/email-list/
****************************************************************
|