Why forbid photography pictures with flash?

[Vladimir]

Colleagues, someone understands why museums forbid photography pictures with flash? Where did this order? At the level of common sense is difficult to believe that the canvases from this sharply ploheet ", and the graphics are usually covered with special glass. In short, is there some technological background? Or is it a question of harm? Technologists, answer.

[Евгений]

Vladimir, on the schedule, such as in the technique "pastel" effect, odnoznachno.Pochemu? Technologists probably explain ..

[Vladimir]

Сообщение от Eugene

Technologists probably explain ..

That and I want to ask the technologists. And as a bed outbreak affected? What's happening?

[nikola]

In February, walked through the halls of the Louvre, take pictures of everything. Near Mona Lisa's crowd
removed. Do not disturb employees influence of light on the safety of products.
Light, humidity, temperature in the great number of visitors seems
not constant. Probably works Louvre printed everywhere where only
and can be photographed on the business is not affected. Consider blocking pictures
GREAT Lease. For those who shot and I'm including it did not come to enjoy
genius of Leonardo, and bring friends photos as proof. (I saw her.)
Pastel drawing for many years. I know that this is one of the most durable technique.
Color relationships do not change the laws of chemistry. (crayons not fade)
More affect the quality of the selected bases and soil. Bacteria often destroys cardboard, paper and cardboard. It seems everywhere the most terrible and dangerous they are.
And if the product before you created 5 centuries ago and it is still fine, I think it is not because it had not been influenced by light.
But the need to preserve pictures! Not less than their health. At the outbreak of vision
affect accuracy.

[Vladimir]

Сообщение от nikola

pictures of everything. Near Mona Lisa's crowd
removed. Do not disturb employees influence of light on the safety of works.

Here is the normal approach to the museum business - take the extra money, but do not spoil the pleasure of people. And we have seen the museum degenerated into fighting. I remember five years ago came to the Russian Museum. The heat was terrible, was with a bottle of water - not allowed to enter with her, spoke about the mode of constant humidity, temperature regime and other blizzard. Well, come - in every other room windows open, air-conditioning nafig together with temperature and humidity conditions. So there is a feeling that the question still in the harmfulness. It's a pity that the technology has not yet responded: (

[ACG]

Vladimir
Sorry, that long did not answer. The end of July holiday.
Of course, I'll ask technologists, but from my point of view, damage to the product of an outbreak is not harmful. Paintings and drawings by fear, basically, only prolonged heat. On this, the microscope is used cold, diode light. Museum bans are likely to relate not to the possible damage to the exhibits, and the impact of the outbreak to the sensors of security and fire alarms.

[Евгений]

Сообщение от ACG

long-term heat exposure.

However, watercolors, pastels, and especially .. just fade in the light (heat is not being). Volodya and asked why?

[Konstantin]

When riding on an excursion to the Church of St. Nicholas, he is Nicholas Ugodnik and he is Santa Claus. Is a church in Turkey.
Guide asked not to remove the frescoes in the church with flash, because fade from strong light.
From Mona Lisa's true - all photographed, and the picture is small and very dark. But it was ten years ago. Anyone who has seen recently? Same?

[K-Maler]

Сообщение от Eugene

Vladimir, on schedule, such as in the technique "pastel" effect, odnoznachno.Pochemu? Technologists P

Until recently, the bed was one of the most persistent techniques, it is almost like rock-painting. It is prepared from natural pigments, very tonkotertyh, any of you can cook it. The pigment is mixed with a very small number of simple binder, like a weak glue. Then she was trying to inflict on the rough paper to less crumbled, sometimes suede, velvet ... Problem to save her from shedding. Harmful vibration rather than flash. Therefore, the reverse side is recommended to put a something soft and pressed glass. Do not carry on the Show! This applies to "light", this pastel. There is another, oily, it's almost like butter, and also uniquely beautiful.

[color="# 666686"]Added after 24 minutes[/color]

Сообщение от Vladimir

Technologists, answer.

I presented the views of the author of the book "painting technique" DI Kiplika (Moscow, izd. Svarog i K ", 1998.). Read it, it was written long ago and for artists, but it must have a home and collectors to know what you can do with the pictures and what not. Watercolor fade in the light, and oil, in contrast, require lighting, etc. Now, for example, many collectors own cover lacquer paintings. It can not be done, the picture darkened on many layers. Or, conversely, personally "clean" from the new means of varnish - so you can remove the final glaze ...

[Сима]

Graphics usually exhibits no hanging, just at the shows, with special lighting. Who thinks that we use the spec. Glass, he is mistaken, it is expensive for museums. I believe that the museum "prohibitions" - is such a mental disease, from which even the left "wall" is difficult to get rid of. And inside the "walls" they (the bans) give a sense of its overvalued those who watch over their execution.
I've been faced with the fact that in Lisbon Oceanarium asked not to shoot with the flash "population". And asked, to my shock, in Russian. There are so many people walk, that fish is probably from outbreaks by the end of the day receive the "convulsions". I think, and superintendents in the museum halls are eligible for leniency, occupational safety and health (in the sense of threat to vision and nerves).