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Invited Article: High resolution digital camera for infrared reflectography
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10.1063/1.3174431
/content/aip/journal/rsi/80/7/10.1063/1.3174431
http://aip.metastore.ingenta.com/content/aip/journal/rsi/80/7/10.1063/1.3174431
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Enlarged detail of IR images of a medium contrast target located 2 m from the focal plane, with aperture set to . Spacing of superimposed bars is 1 mm. Camera set to: (top) ISO 100; (bottom) ISO 400.

Image of FIG. 2.
FIG. 2.

Enlarged detail of IR image of a medium contrast target located 2 m from the focal plane with the camera set to ISO 100. Spacing of superimposed bars is 1 mm. (Top) Lens at ; (bottom) .

Image of FIG. 3.
FIG. 3.

Detail of a painting described in the text. (Left) Full 830–1100 nm range of the IR system; (right) at with 1000 nm high-pass filter over the lens, but without manually offsetting the focus to compensate for the additional focus shift at the longer wavelength.

Image of FIG. 4.
FIG. 4.

Family Portrait, Lorenzo Lotto, 1523/1524 ( oil on canvas). Image captured in situ using a Canon 5D with 35 mm lens.

Image of FIG. 5.
FIG. 5.

IR reflectogram of Family Portrait, Lorenzo Lotto, 1523/1524 ( oil on canvas) captured in situ using modified Canon 30D with 35 mm lens.

Image of FIG. 6.
FIG. 6.

Enlargement of the nearest, left portion of the octagonal pattern in Fig. 5. The superimposed bars have a spacing of 1 mm, showing the resolution under these in situ conditions is better than 0.5 mm.

Image of FIG. 7.
FIG. 7.

IR reflectogram of the octagonal pattern. The arrows superimposed to the right indicate the three regions, which our previous analysis of this painting has found. Compare this with Fig. 1 of Ref. 37.

Image of FIG. 8.
FIG. 8.

(Left) “Saint Nicolas and Saints Catherine, Lucy, Margaret, and Apollonia,” Francesco Botticini, late 15th century ( tempera on panel). (Right) detail of the lower center of the IR reflectogram of the full painting, captured handheld at 1/30 s with ISO at 1600. The measured resolution under these conditions is approximately 1.2 mm.

Image of FIG. 9.
FIG. 9.

(Left) Visible light image of a set of Japanese armor located within a protective glass enclosure. (Right) IR reflectogram of the armor. The various materials used in the armor are much more apparent in this image than in the visible due to their optical properties in the IR.

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/content/aip/journal/rsi/80/7/10.1063/1.3174431
2009-07-15
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Invited Article: High resolution digital camera for infrared reflectography
http://aip.metastore.ingenta.com/content/aip/journal/rsi/80/7/10.1063/1.3174431
10.1063/1.3174431
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