Sunday, February 3, 2019

Cyanotype (11th Round)


1st round (negative for brown color) - Exposed 7 mins under bright sunlight, toned with lipton tea
2nd round (negative for yellow color) - Exposed 7 mins and bleached
Will carry out the last round tomorrow.





Someone has asked me how long is the exposure time under bright sunlight and how to tell if the prints are properly exposed.

So far, 7-10 mins should be enough, but I intentionally over-exposed them for 10-15 mins at times for bleaching process.

The below show the changes on the prints during exposure :



Left : a minute under the sun                                                 Right : 5 mins later

Left : 7 mins later (can stop exposing the print)
The highlights and midtones turned a green/blue, while the shadows look slightly solarized.

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