Heliography
Esquema
Jerarquía
image-making processes and techniques > photography and photographic processes and techniques > photographic processes > direct positive processes
Descripción
Process invented by J.N. de Niépce around 1825 in which bitumen that had been coated on glass or metal hardened in relation to exposure; by washing with oil of lavender left only the hardened image area.
URI original del concepto
Otros términos
- heliografie [nl]
- heliografía [es]
- bitumen process [en]
- Niépceotype [en]