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Appraisal Find out where and how you can get artworks appraised. Discussions related to fine art appraisal. |
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24.11.2014, 22:40 | Язык оригинала: Русский #11 |
Гуру
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CakeCannot be so warm! it is dangerous to work. 60 degrees was beyond restoration on irreversible processes go!!!
And this was done so: from the front side included lamp IR ( don't remember what they were called but there were several pieces with different wavelengths) at a decent distance of 2-3 meters the rest of the light was off and was shooting ( nothing to heat is not necessary) extract 20-30 minutes. The whole point is that different materials on different reflect or absorb the invisible rays of the spectrum and this difference is visible on the film. heat is nothing to do with. Последний раз редактировалось олег назаров; 24.11.2014 в 22:46. |
24.11.2014, 23:00 | Язык оригинала: Русский #13 |
Гуру
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Thank you!
I will try and so too. It turns out that after preliminary heating and cooling picturesque layer of the thermal imaging camera sees IR radiation of different colors having different temperature from the uniform heating of the cooling with different intensity. Moreover, simultaneously. On prolonged heating paint layer IR film sees the process of reflection (radiation) wave infrared spectrum of colors in time (30 minutes) as a single frame... Please tell the temperature. To what degree "heat"? Because the invisible infrared spectrum is still warm. Thank You again for your help! P. S. "Experiments" put on foolish "bargain". Good - shore... Последний раз редактировалось Пряник; 24.11.2014 в 23:08. |
25.11.2014, 07:15 | Язык оригинала: Русский #14 |
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[QUOTE=олег назаров;3287581]Cake, ( nothing to heat is not necessary) extract 20-30 minut@
It seems understood. Irradiation painting layer sources of infra-red spectrum should start with room temperature. The final warming the top colors when working with infrared film is not fixed. It will be insignificant. Thank you! |
25.11.2014, 15:34 | Язык оригинала: Русский #15 |
Гуру
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[QUOTE="Пряник;3287641"]Please tell temperature. To what degree "heat"? Because the invisible infrared spectrum is still teplo@
in this case it is not the heat but rather light. the surface of the picture in General is not cool! (well, maybe a few tenths of a degree) lamp feels more like a red photo-lantern and not on the heat reflector and is three metres. |
Этот пользователь сказал Спасибо олег назаров за это полезное сообщение: | Пряник (25.11.2014) |
25.11.2014, 20:16 | Язык оригинала: Русский #16 |
Гуру
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Thank you!
I read that when working with different receivers IR spectrum use in source and the incandescent lamp of 60 W and to discharge at 1000 watts. And always with filters. Thank You again for your help! P. S. Could it be that the camera is poorly suited for exploring the beautiful layer, but all of its capabilities yet been fully assessed. For example, the instrument shows the stretcher through the canvas if it is slightly warm (2-3 degrees) on the reverse side. Or patch on the canvas. Could it be that the camera you can see more information and paints a picturesque layer, but today I can't yet understand. Sincerely, |
26.02.2015, 23:35 | Язык оригинала: Русский #17 |
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So, the conclusions...
Unfortunately, modern cameras are not suitable for a full study of painting in the infrared spectrum due to insufficient resolution of the received image.
__________________
Под самым красивым хвостом павлина скрывается самая обычная куриная жопа. Так что меньше пафоса, господа. Фаина Раневская. |
27.02.2015, 08:18 | Язык оригинала: Русский #18 |
Banned
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Cake That you modrice? Go to the experts in this field and learn what you need.
Your experiments can be disastrous for your paintings. |
Эти 4 пользователя(ей) сказали Спасибо uriart за это полезное сообщение: |
28.02.2015, 16:24 | Язык оригинала: Русский #20 |
Гуру
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[QUOTE="uriart;3393311"]Gingerbread That you modrice? Go to the experts in this field and learn what you nueno@
And I did...
__________________
Под самым красивым хвостом павлина скрывается самая обычная куриная жопа. Так что меньше пафоса, господа. Фаина Раневская. |
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