DIN 19051-2:2013-03

DIN 19051-2 is applicable for 2 test fields compiled from ISO Test Characters and used for quality assessments in microfilm technology. Test Character No. 1 used in Test Chart No. 1 is, according to ISO 446:2004, a typographically comparable character and serves for subjective testing (visual evaluation) of legibility. Test Character No. 2 used in Test Chart No. 2 possesses a metrologically evaluable set-up and serves in accordance with ISO 3334:2006 for objective testing (metrological evaluation) of legibility. Supplement 1 to DIN 19051-2 describes a test chart consisting of 20 test fields in accordance with DIN 19051-2. This test chart's individual test fields serve together with two neutral density cards in accordance with DIN 19051-3 Supplement 1 for set-up of a test array (test table) for testing the original negatives when microfilming technical drawings in accordance with DIN 19051-3. Supplement 2 to DIN 19051-2 describes two test charts consisting of 20 test fields in accordance with DIN 19051-2. The test chart serves for testing the legibility for (microfilm) rotary cameras. Line assemblies (line width of the dark or light lines is approximately 1 mm) can be found between the individual test fields. With this the synchronous running of template and microfilm in relation to the scale of reproduction of the recording V_A (in technical terms also the reduction ratio) can be checked. The document has been prepared by Working Group NA 009-00-14-01 AK "NABD/NVBF Arbeitskreis DIN 19051" ("NABD/NVBF Working group DIN 19051") which includes experts of Working Committee NA 009-00-14 AA "Bestandserhaltung in Archiven und Bibliotheken" ("Preservation for archives and libraries") and Working Committee NA 149-00-01 AA "Fotografische Medien" ("Photographic media"). The Entertainment Technology, Photography and Cinematography Standards Committee (NVBF) is the body responsible for the document and the Information and Documentation Standards Committee (NABD) is contributor.