Using an artist of various optical illusions

[Art-ort]

Сообщение от sergejnowo

As a trivial matter.
And whether prepared by the restorer "return" to restore the lost glaze in the previous form?
Of course taking into account changes in color, tone, environment painting.

Return-it can, but you never know "previous form" if let 17y age ...

[sergejnowo]

Сообщение от Art-ort

Back-it can, but you never know "previous form" if let age 17y ...

That just it.
Works of the same artists, say the 17-th century, the Louvre and look differently than in Berlin.
Everybody has their own opinion on the "refurbishing" of painting.

[K-Maler]

Сообщение от Jasmin

El Greco's use of zinc white in large quantities, contrary to all rules. Even schools do not recommend doing so as not to spoil the color. But zinc does not darken with time, and brightens,

In fact, zinc white were obtained in the mid-19 century (cheap). Somewhat earlier, in the late 18 century. been attempts, but is too expensive and did not catch. El Greco podmalevyval tempera whiting and podmalevku wrote very light, then the glaze is very bright. Therefore, his paintings survived. Zinc oxide can not write the lower layers and do not want to write Hull, because They crack and not very opaque, over time the lower layers can shine ... They are mixtures better.

[color="# 666686"]Added after 9 minutes[/color]

Сообщение от sergejnowo

But whether prepared by the restorer "return" to restore the lost glaze in the previous form?

I think not. Especially in the case of masterpieces. Brought to us a portrait of Rembrandt's Titus. It was evident that the top is removed, painting looked rather dry. But the application of any paint would gag (Disputes of Danae). In such cases, enough to cover with varnish. And use the old ways Cisca-polish remover, not chemical. Details do not know, but I know that so.