We often get asked the question “How long will it take to expose my cyanotypes in the sun?” and the answer to this is always “It depends.”
With winter drawing is and with not much sunlight we want to give some pointers on how long it will take to expose your cyanotypes in the winter sun.
If the weather permits and it’s not raining exposing your prints outside is always preferable. The best time for exposing is around noon, between 12 o’clock and 2pm, this is when the sun is the strongest. Put your paper in a sunny spot. Exposure times will vary between 10 minutes and an hour depending on time of day and weather conditions.
If it’s raining you can always try and expose inside. If you do this you need to put your paper where it will get the most sun, propped up by the window and expect long exposure times, even a couple of hours.