от Уикипедия, свободната енциклопедия
Sergei Mikhailovich Prokudin-Gorskii, 1915 photograph (a detail of the larger photo).
Public domain from memory.loc.gov.
[edit] A quick-and-dirty tutorial on converting Prokudin-Gorskii photographs with Adobe Photoshop
- Download an archival tiff image of one of the three-color slides [1]]. (These are huge files, around 70MB. Anticipate 45 minutes to an hour over DSL.)
- Open the file in Photoshop, copy the top image.
- Make a new file, and make sure it is RGB format
- Make the channels visible in the floating palette
- Paste the top image into the Blue channel
- Repeat the process; paste the center image into the Green channel, and the bottom image into the Red channel
- View the whole thing. The channels won't be aligned; they'll need to be nudged with the Move tool. Work with the center of the image; magnify 200-300% for best results.
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