Photograph (Experimental Photogenic Drawing, Varnished Double Negative), by Sir John Herschel, 1839 | |||||||||||
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| Inventory Number: | 27282 | ||||||||||
| Object Type: | | ||||||||||
| Persons: |
Sir John Frederick William Herschel (Photographer) | ||||||||||
| Date Created: | |||||||||||
| Accession Number: | 1928-71 | ||||||||||
| Brief Description: | Experimental photogenic drawing by Sir John Herschel, undated but 1839, consisting of two nearly identical negatives stuck together and oiled or varnished, for use as a negative in 're-reversal' or 'transfer' (positive printing) experiments. Compare other double negative 87974. Subject: engraving 63470, lady with beads Technique: contact copy Format: vertical Polarity: negative Orientation: laterally reversed Quality: xxx, image darkened by varnish but good Colour: xxx Chemistry: silver based, hypo fixed Coating: joined by adhesive [probably canada balsam], oiled or varnished Inscription: none visible Paper: xxx Condition: extremely fragile due to the embrittling effect of the varnish, xxxxx, one small fragment (from bottom left corner) Purpose: two negatives have been stuck together to enhance contrast, and oiled or varnished for better translucency, in order to be used as a negative in experiments with making positive copies (prints). For fuller descriptive and historical commentary see narratives. | ||||||||||
| Primary Inscriptions: | |||||||||||
| 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 | |||||||||||
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