Faces in Focus: Equipping the National Portrait Gallery's New Conservation Laboratory for Photography, Works on Paper and Miniatures

Lead Research Organisation: National Portrait Gallery
Department Name: Exhibitions and Collections Management

Abstract

The National Portrait Gallery was founded in 1856 with the aim of promoting through the medium of portraiture the appreciation and understanding of the people who have made and are making British history and culture, and of promoting the appreciation and understanding of portraiture in all media. This specialised focus has shaped the development of the institution and its collection, and the Gallery now holds the largest collection of portraits in the world. An Independent Research Organisation (IRO), the Gallery's creative research culture has enabled the collections to be used to examine questions of identity, history, achievement, citizenship, and artistic methods and materials, working with partners across the GLAM and HEI sectors. These partnerships include people from all stages of their research careers, ranging from Professors to student groups that are invited for teaching sessions into the Gallery's research spaces and the Collaborative Doctoral Studentships that Gallery staff develop and co-supervise. Partners also regularly include creative practitioners, such as designers, developers and writers, as well as the artists with whom the Gallery works through its commissioning programme and the annual international portrait competitions. Taken together, these amplify the Gallery's impact on the UK's cultural economy far beyond the footprint of the Gallery's London site, online presence, and the National and International programme.

Within the Gallery's holdings, three areas of the Collection are comparatively understudied and therefore investment in research capability would offer a particular opportunity: the Photographs collection of more than 250,000 works; the nearly 100,000 works on paper held within the Primary, Reference and Archive collections; and the more than 2,500 Miniatures. Currently these can only be examined by researchers in the shared spaces of the Painting Conservation Studio, the Framing Studio or the Public Study Room of the Library and Archive. Lack of specialised equipment and a dedicated space has meant that technical analysis and conservation have had to be outsourced to external contractors, with recent projects ranging from the analysis of negatives in order to inform decisions for their safe storage and long-term care, to the treatment of a number of Lucian Freud's sketchbooks, which the artist bequeathed to the Gallery. The costs associated with undertaking research in this way, and the complexity of moving works for analysis, have undeniably restricted the Gallery's research capacity in relation to these internationally significant collections.

However, the Gallery's transformative Inspiring People project, due for completion in 2023, has instigated a step-change in relation to the display and management of these collections. More works have been integrated into the new displays, and specialised gallery spaces have been created to explore the 'Making' of Photographs, Prints, Drawings and Miniatures. At the same time, the building project has offered the opportunity to create a dedicated Conservation Laboratory for Photographs, Works on Paper and Miniatures for the first time, and to refurbish the Negative Store. It is within this context that the Gallery seeks funding to purchase analytical equipment that will optimise the Gallery's research capability in relation to these specialist collections.

The purchase of FTIR, a Spectrophotometer, a Digital Binocular Microscope, a 3D Microscope and a Portable Extraction Unit would enable the Gallery to develop its in-house expertise in the materials and techniques of Photographs, Negatives, Works on Paper and Miniatures, and thereby to instigate and support new research projects. Funding from CResCa would be complemented by the Gallery's commitment to investment in staff capacity through the recruitment of specialist conservators in Works on Paper and Photography in core staff for the first time.

Publications

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Description The Creative Research Capability award supported the National Portrait Gallery (NPG) Conservation Department in equipping the newly established Paper, Photographs and Miniatures Conservation Studio. The award allowed the Gallery to purchase a range of analytical equipment, including: an FTIR Spirit, supplied by Shimadzu UK Ltd; a UV2600i Spectrophotometer supplied by Shimadzu UK Ltd; a M60 Microscope with digital camera, supplied by Leica; a 3D video microscope with motorised stage, supplied by Hirox; a Purair 5-24XT Portable Extraction Unit supplied by Air Science; and storage and digital preservation of up to 4TB of data p.a. along with SSD15k Nimble storage and cloud back-up. The equipment enables the Gallery to develop its in-house expertise in the materials and techniques of Photographs, Negatives, Works on Paper and Miniatures, and thereby to instigate and support new research projects.

Core conservation staff, as well as a newly recruited freelance conservation scientist, have undertaken training in the use of the individual instruments. Training was provided by the suppliers, Hirox, Leica and Shimadzu, and by a conservation/heritage specialist who was able to offer specific training focussed on heritage applications.

The installation of analytical equipment in the Paper, Photographs and Miniatures Conservation Studio has raised the profile of this new research facility at the NPG by enhancing the range of specialised techniques that can be used to examine these significant collections. The equipment is already enhancing understanding of understudied areas; for example, the FTIR Spirit has begun to facilitate the rapid and accurate identification of negative substrates, while the Hirox microscope is being used to assess and document miniatures selected for rotating display in the Gallery's 'Making' space dedicated to the medium, which opened in 2023. The stereo microscope, Hirox 3D microscope, and extraction have all been used routinely during treatment and examination of photographs, works on paper and miniatures in the new studio. The storage and backup facilities will allow the images and data produced with the new equipment to be securely stored in the long-term.

Now that the equipment has been installed, research collaborations with HEIs are in development, including with the Courtauld, City and Guilds, and Lincoln University. For example, the examination of the materials used in the recent commission 'Work in Progress' by Jann Haworth and Liberty Blake (NPG 7145) using the UV2600i Spectrophotometer is being developed as a postgraduate student research project for a City and Guilds conservation student. This artwork will be on long-term display and its light sensitivity will be assessed using accelerated aging of samples, which will inform the future care and display of the artwork.

In addition, the equipment has opened up new opportunities to collaborate with other museums and heritage organisations. For example, discussions are underway around sharing complimentary equipment with English Heritage, while colleagues from the Horniman Museum and Gardens will be using the FTIR to help identify historic conservation materials. The first specialist study event for researchers using the new equipment is also in preparation; this will involve examination and discussion of miniatures from a number of public and private collections that are coming to the Gallery on loan for a forthcoming exhibition.
Exploitation Route The equipment acquired through the award will facilitate conservation treatment of works on paper, photographs and miniatures in the NPG collection. The results of analysis will also lead to new research into the dating and attribution of works, and will further understanding of artistic practice in the production of portraiture. The technical and high-resolution digital images produced using the equipment will be accessible to conservators, curators and other researchers at the Gallery, and to wider academic and public audiences, which will be further facilitated by the Gallery's engagement with IIIF. The identification of the plastics used for negative substrates for specific photographers will contribute to knowledge of photographic processes, and could be used to help inform other institutions with similar holdings to identify material in their collections to allow targeted care and safe storage.
Sectors Culture

Heritage

Museums and Collections

URL https://www.npg.org.uk/collections/research/programmes/conservation/ahrc-creative-research-capability-grant
 
Description The new equipment is helping to ensure that the NPGs large collection of negatives are stored safely. The FTIR Spirit can be used to characterize film negative substrates, which allows us to identify accurately cellulose acetate and cellulose nitrate films that require specific storage conditions. Cellulose acetate negatives should be stored in cold storage (recently installed on site at the NPG) to slow down their inherent degradation, and cellulose nitrate films are stored off-site at the BFI due to their high flammability. The Digital Communications team at the NPG are featuring the preparation of portrait miniatures in upcoming social media content. The process of capturing images using the Hirox 3D microscope and the images produced will be featured, demonstrating the work carried out in the conservation department to document objects and prepare them for display.
First Year Of Impact 2024
Sector Culture, Heritage, Museums and Collections
Impact Types Cultural

 
Description Art of Conservation symposium 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Other audiences
Results and Impact 150 people attended a symposium organised by the Burlington Magazine and London Art Week. This considered how the technical study of paintings informs conservation treatment, various methods of analysis and their application to paintings from different time periods, and what the future holds in this area. Attendees also visited the conservation studios on a tour where they were shown analytical equipment used for examining artworks. Attendees asked questions about how technical analysis might inform digital reconstructions and engaged with technical analysis of artworks.
Year(s) Of Engagement Activity 2023
URL https://londonartweek.co.uk/law-winter-2023-symposium/
 
Description Article in Face to Face- the newsletter for National Portrait Gallery Supporters 
Form Of Engagement Activity A magazine, newsletter or online publication
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Supporters
Results and Impact An article about the new NPG Paper Conservation Studio was written by Works on Paper Conservation Manager, Emmanuelle Largeteau, for Face to Face- the newsletter for National Portrait Gallery supporters, which is distributed in digital and print formats to NPG members across the UK and all around the world: 2254 by post and 6347 by email. The article introduced the new studio, including the equipment acquired using the UKRI-AHRC funding, which was also illustrated. The purpose of the article was to present the work of the conservation department, including conservation treatment and technical analysis, to supporters and highlight to importance of funding to support these activities.
Year(s) Of Engagement Activity 2023
 
Description Careers talk for Art Students from Totton College, Southampton 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach Regional
Primary Audience Schools
Results and Impact An online talk on a career in conservation was presented to approximately 20 Level 3 students and some Level 2 students at Totton College in Southampton. The talk included an introduction to technical analysis, including X-radiography, Infrared Reflectography, microscopy and FTIR. The school reported that the students really enjoyed the session and were really interested to hear about conservation of works of art, and that the teacher was also enthused.
Year(s) Of Engagement Activity 2024