IPTC does not state a specific number of characters available for TIFF: https://iptc.org/std/photometadata/specification/IPTC-PhotoMetadata#credit-line So it could be that the TIFF format has not been updated to include more than 30 in the Credit Line tag, whereas JPEG may have been updated… Need some more digging… BR Yair Yair Shahar | Product Manager | Phase One [log in to unmask] | +44 77 8992 8199 From: AHFAP UK cultural heritage sector <[log in to unmask]> on behalf of Kira Zumkley <[log in to unmask]> Reply-To: AHFAP UK cultural heritage sector <[log in to unmask]> Date: Tuesday, 13 February 2018 at 12:46 To: AHFAP UK cultural heritage sector <[log in to unmask]> Subject: Re: Image matadata Hi Claire, Yes, we discovered the same issue. If I remember correctly the cut off is 30 characters. Our ICT team did some research and I was told that apparently this is due to how IPTC credit line fields are programmed world-wide and there is nothing you can do about it. If you find that there is a solution to this after al please let us know as we would be very interested in it. Many thanks, Kira KIRA ZUMKLEY PHOTOGRAPHY MANAGER +44 (0)207 942 4556 Science Museum Group Exhibition Road, London SW7 2DD Footer:group From: AHFAP, for image professionals in the UK cultural heritage sector [mailto:[log in to unmask]] On Behalf Of Claire Collins Sent: 13 February 2018 09:51 To: [log in to unmask] Subject: Image matadata Hi everyone, Just wondering if anyone has come across this problem before. IPTC metatdata 'Credit LIne' field seems to have some strange character limit. Reads fine in Photoshop but when viewed in other metadata reading programs in cuts off after a certain number of characters. We noticed it because it wasn't copying across fully to our DAM system. Oddly, this seems to only be a problem with TIFF files and not JPGS. Any thoughts? Thank you, Claire This email has been scanned for email related threats and delivered safely by Mimecast. For updates on all Science Museum news and events sign up to our free e-newsletter at www.sciencemuseum.org.uk<http://www.sciencemuseum.org.uk> This e-mail and attachments are intended for the named addressee only and are confidential. If you have received this e-mail in error please notify the sender immediately, delete the message from your computer system and destroy any copies. Any views expressed in this message are those of the individual sender and may not reflect the views of the Science Museum Group. Please note that any information sent, received or held by Science Museum Group may be disclosed under the Freedom of Information Act 2000. This email has been scanned for email related threats and delivered safely by Mimecast.