Filter drawing extends the practice of chalk-line drawing to the registration of lines with light, created by perforating colored light filters.

Filter installation has evolved from chalk-line mark-making on optical gels to the incision of perforated lines through transparent color filters. These are fixed directly upon window glass, allowing light to define a sequence of illuminated lines. Site locations and views through windows specifically inform and contextualize the color, selection and placement of overlapping, perforated light filters.

Aspect ratios of color rectangles are derived from an analysis of the dimensions of selected windows and informed by the proportions of traditional, premetric sizes of film and paper, employed by cartographers, stationers and printers, including flat-cap, folio, quarto and octavo formats.

Perforations are made with pounce-wheels, grommet punches, specialized drill bits and horticultural implements. Asterisms, clusters of perforated holes resembling constellations, occur at incremental intervals, in periodic alignments of points, along parallel, graduated scales of traditional measurement systems. These form pierced star patterns in the colored gels.

Filter Drawing: Selected Images