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<p>[QUOTE="Dawnno, post: 611740, member: 10171"]so, what do you make of this sequence?</p><p>[ATTACH=full]179902[/ATTACH]</p><p><br /></p><p>the white border line was painted onto the gold leaf (blue bracket). Then you look to the three blue lines inside the halo, and see that it the halo was made even 'brighter' - perhaps for aethestics. The red halo is over the rest of the 'equivalent' brightness of surrounding gold and the area by the white line.</p><p><br /></p><p>So I agree that there was a shadow/wash added to the gold under the dropping robe to the hands, to show a connection in the overall image.</p><p><br /></p><p>So the darkening is intentional, i think now. So then, that crackle had to crackle before the guy in red was even painted. Does gold leaf 'crackle' during drying?</p><p><br /></p><p>This is what one expert says:</p><p><a href="http://albumen.conservation-us.org/library/c20/michalski1991.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://albumen.conservation-us.org/library/c20/michalski1991.html" rel="nofollow">http://albumen.conservation-us.org/library/c20/michalski1991.html</a></p><p>"Some gilding cracks, some does not, even after centuries. It is generally accepted that relative humidity fluctuations are somehow the cause for the cracking of gilding, but no clear explanation exists."</p><p><br /></p><p>Not to drag on too long, but I have found nothing that suggests anything but the gesso under the leaf crackles, causing the pigments and leaf on top to crack.</p><p><br /></p><p><a href="https://www.khanacademy.org/humanities/special-topics-art-history/creating-conserving/painting-materials-techniques/v/tempera-paint" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.khanacademy.org/humanities/special-topics-art-history/creating-conserving/painting-materials-techniques/v/tempera-paint" rel="nofollow">https://www.khanacademy.org/humanities/special-topics-art-history/creating-conserving/painting-materials-techniques/v/tempera-paint</a></p><p>for an 11 min crash course in gold early renaissance paintings in egg tempera.[/QUOTE]</p><p><br /></p>
[QUOTE="Dawnno, post: 611740, member: 10171"]so, what do you make of this sequence? [ATTACH=full]179902[/ATTACH] the white border line was painted onto the gold leaf (blue bracket). Then you look to the three blue lines inside the halo, and see that it the halo was made even 'brighter' - perhaps for aethestics. The red halo is over the rest of the 'equivalent' brightness of surrounding gold and the area by the white line. So I agree that there was a shadow/wash added to the gold under the dropping robe to the hands, to show a connection in the overall image. So the darkening is intentional, i think now. So then, that crackle had to crackle before the guy in red was even painted. Does gold leaf 'crackle' during drying? This is what one expert says: [URL]http://albumen.conservation-us.org/library/c20/michalski1991.html[/URL] "Some gilding cracks, some does not, even after centuries. It is generally accepted that relative humidity fluctuations are somehow the cause for the cracking of gilding, but no clear explanation exists." Not to drag on too long, but I have found nothing that suggests anything but the gesso under the leaf crackles, causing the pigments and leaf on top to crack. [URL]https://www.khanacademy.org/humanities/special-topics-art-history/creating-conserving/painting-materials-techniques/v/tempera-paint[/URL] for an 11 min crash course in gold early renaissance paintings in egg tempera.[/QUOTE]
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