MIMO Digitisation Standard

9. Photographing9.1. Technical qualityThe quality of the photo master file is 24bitcolour at a minimum size of ca. 2.100 pixels forthe longer side, corresponding to ca. 17.8 cmat 300 dpi. However, due to technical development,a larger size is recommended. The fileformat must be lossless, e.g. uncompressedTIFF. The colour profile and suitable metadatashould be included.9.2. Color managementPrecautions for a professional colour managementshall be taken. To this purpose, avisual colour reference (target) can, but needsnot to be included, e.g:CM, E.2003.6.1Photographed under same conditions and mountedin the image (slower)layer 1 visibleboth layers visibleGNM Pl.O.3431Two-layer Tiff (slowest, more storage space)GNM, MI 968Photographed together with the object (fastest)9.3. Lighting, background andmountingLighting should be such that no important partof the instrument is blurred by shadows orreflections. The colour and structure of thematerials should be rendered as clearly andnaturally as possible. In most cases, a diffuselighting is the best point of depart. Fills, rakinglight to bring out surface structures, etc. belongcommonly to the means of professional photographers.The views of instruments describedin the following texts aim to show importantorganological details as form, proportionsand technical details rather than to give adecorative aspect.In serial digitisation, care should be taken touse one lighting and mounting scenario for asmany objects as possible to be efficient, e.g.for a series of reflecting instruments as brasswind instruments. The object should be photographedusing a neutral background, unlessthe spatial situation doesn’t permit this, e.g. fororgans. It is recommended to keep sufficientspace around the object that can be cropped inprinting. N.B.: In this paper, images are often8