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National Archives and Records Administration
College Park, MD
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Henry Duan

National Archives and Records Administration

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1 to 5 of 9 total
Posted By Henry Duan 07-17-2026 15:16
Found In Egroup: Microfading Tester International Discussion Group
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Hi, Bryan, I had studied light stability of modern photographic materials using Xe-MFT, and compared the results with my colleagues' R&R study in ISO TC42 WG5 (using standard Xe-light exposure chamber). In general, MFT test conditions are limited to moderately stable color photographic prints (dye inkjet, ...
Posted By Henry Duan 02-05-2026 10:46
Found In Egroup: Microfading Tester International Discussion Group
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Hi, Shiho, To report a MFT test result, I think reporting the type of light source used for the test is more important, Xe MFT with UV-IR band filter (in my case, the measured CCT is ~5000K), or LED MFT. In the case of LED MFT, do mention the CCT spec of the LED used in the MFT, 2700K, 3000K, 400k or ...
Posted By Henry Duan 01-30-2026 10:59
Found In Egroup: Microfading Tester International Discussion Group
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Hi, Shiho, I am sharing my understanding here. I think what's more important than CCT is the light profile that will be used for the final display, which is somewhat correlated to the CCT of the light source, but not always exactly. If the display will be using daylight through UV filtered windows, then ...
Posted By Henry Duan 08-12-2025 14:11
Found In Egroup: Microfading Tester International Discussion Group
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Hi, Catherine and Noni, I do not have any good ref. standard. I heard someone in Europe was trying to find replacement reference materials, and was unable to get into the commercial market; I guess it is too small for mass production with commercial profit. Alternative might be relying on relative ...
Posted By Henry Duan 08-11-2025 12:27
Found In Egroup: Microfading Tester International Discussion Group
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Hi, Ms. Zachri, What is the light source of your MFT? I assume it is LEDs for Instytut Fotonowy MFT. If so, I suggest avoiding using Bluewool reference, since it is designed for Xe light source (not sure D65 or D50), which include some UV components. But the LED light source does not apply. In addition, ...