Polychrome projections with non-colorized photographic positives
Planche publiée dans Paris-Photographe, vol. 4, 30 april 1892
Chart with the three types of projected radiation and a composite image
Snapshots by Léon Vidal, photocollography by J. Ruyer, Nancy
18,5 x 27cm, broché
© Bibliothèque nationale de France
> Consult this issue of Paris-Photographe, see Plate 11 towards the front of the volume.)
© BnF, Éditions multimédias, 2018