File:A lovely afternoon at the Kiel Harbour, Germany, 1890s. With people strolling around, relaxing at the cafe and boats sailing across the bay. (49828630568).jpg

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This image has been colorized. The coloring is speculative and may differ significantly from the real colors.

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The original image I colorized from was a Photochrom print. Photochrom is an old process for producing colorized images from black-and-white photographic negatives via the direct photographic transfer of a negative onto lithographic printing plates.

A tablet of lithographic limestone called a "litho stone" was coated with a light-sensitive surface composed of a thin layer of purified bitumen dissolved in benzene. A reversed halftone negative was then pressed against the coating and exposed to daylight (ten to thirty minutes in summer, up to several hours in winter), causing the bitumen to harden in proportion to the amount of light passing through each portion of the negative. Then a solvent such as turpentine was applied to remove the unhardened bitumen and retouch the tonal scale, strengthening or softening tones as required. Thus the image became imprinted on the stone in bitumen. Each tint was applied using a separate stone that bore the appropriate retouched image. The finished print was produced using at least six, but more commonly ten to fifteen, tint stones.
Date
Source A lovely afternoon at the Kiel Harbour, Germany, 1890s. With people strolling around, relaxing at the cafe and boats sailing across the bay.
Author Julius Jääskeläinen

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
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Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by Julius.jaa at https://flickr.com/photos/155661213@N08/49828630568. It was reviewed on 24 June 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

24 June 2020

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Date/TimeThumbnailDimensionsUserComment
current22:10, 24 June 2020Thumbnail for version as of 22:10, 24 June 20203,489 × 2,386 (8.04 MB)VisbyStar (talk | contribs)Transferred from Flickr via #flickr2commons

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