Actin series, whose title refers to the actinism designating in photography the photosensitive action of light on the printing process of the support, aims, in the words of the artist, at "an exhaustion of light". The photogram to come is plunged, as in any process of filmic development of which one remembers here the absence, in a photosensitive emulsion to which are added, as on the palette of a painter, pigments of color. The works obtained succeed in the feat of resting on a total materiality and to give to see entirely abstract and polychromatic compositions. A gestuality in act.