Photograph (Experimental Photogenic Drawing, Cyanotype), by Sir John Herschel, c.1842 | |||||||||||
Inventory Number: | 15382 | ||||||||||
Object Type: | | ||||||||||
Persons: |
Sir John Frederick William Herschel (Photographer) | ||||||||||
Date Created: | |||||||||||
Accession Number: | 1928-71 | ||||||||||
Brief Description: | Experimental photogenic drawing (direct positive cyanotype) by Sir John Herschel, undated, c.1842. The surprising blue and green effect is a characteristic of one of the experimental variants of the cyanotype that produced a direct positive image. The corners of the image (not of the paper itself) are cut away. Subject: engraving 63470, lady with beads Technique: direct positive contact copy Format: vertical Polarity: positive Orientation: laterally reversed Quality: too dark, no clean highlights Colour: dark blue, green border, plain back Chemistry: direct positive cyanotype, the inscription implies lead acetate and ?ferric ammonium citrate as sensitising agents Coating: none Inscription: chemical note Paper: normal, thinnish Condition: good Purpose: a cyanotype experiment using a variant process that produced a direct positive image. For fuller descriptive and historical commentary see narratives. | ||||||||||
Primary Inscriptions: | 'AcL + ACl + [...?]' [latter in circle]. | ||||||||||
Provenance: | Presented by Miss Herschel and Lady Lubbock in 1928. They were the two surviving and youngest children of Sir John Herschel (Francisca and Constance). | ||||||||||
Collection Group: | Herschel's Photographic Experiments | ||||||||||
Material(s): |
Paper | ||||||||||
Dimensions: |
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Narratives | |||||||||||
Permalink: http://www.mhs.ox.ac.uk/object/inv/15382