Cyanotype exposure app
With this app on your phone you can accurately measure the correct exposure time for cyanotypes in all weather conditions. Simply use the estimator or let the app control the exposure for you. The app will adjust its exposure on the fly if the weather changes. The app also has the option to pause and resume the exposure. This app gives you a clear advantage of size, quantity and uniformity over other methods of exposing cyanotypes.
There is only one setting on the app – Dose. You just do a few test exposures to find the Dose that you like then use that Dose in all of your exposures.
All test exposures below use the exact same Dose in all different weather conditions.
Test Exposures
Mixed sun & moving cloud
Watch the app exposure on the fly as the weather changes from sun to cloud and back repeatedly.
UK Winter Sun
Cyanotype exposure on a sunny winter day at noon UK using the app.
November Overcast
Cyanotype exposure on a cloudy day in November at noon UK using the app.
November Light Cloud
Cyanotype exposure on a light cloud day in November at noon UK using the app.
November Rain
Cyanotype exposure on a Rainy day in November at noon UK using the app.
November Snow
An exposure in winter snow through a single glazed window.
What are Altxpo's advantages over exposure lamps
No size or quantity limit
Cyanotypes without limits. Much more versatile than a UV lamp.
No Hot spots
Perfectly even exposures.
Completely eliminates the hot spot problem that UV lamp exposures can suffer from.
Portable Exposure Meter
Use it anywhere. Nature walks, Field classes, Remote locations. No network connection needed.
Any conditions
Get perfect exposures in all weather.
Great for groups & classes
If you need to expose a large amount of cyanotypes just give the estimate to your students and let them time their own pieces.
Works with Many UV based processes.
Cyanotype, Gum printing, Salt printing, Argyrotypes, Van Dyke (VanDyck) , Platinum/Palladium, Carbon , Kallitype , Albumen Printing, Screen printing or any process that can use Natural UV for exposure.
Expose in all conditions
Thick cloud
North facing
Light cloud
Partly cloudy
Behind a window
Rainy
Which devices will be supported by Altxpo
The sun is by far the best light source for exposing cyanotypes and similar processes. Cyanotype exposure in natural light has always been challenging to achieve. In any weather conditions, any time of year. The Altxpo app is designed to help achieve results that are consistent and controllable.
You can decide the depth of the exposure and expose multiple cyanotypes to the same darkness level, even on different days and different weather conditions.
The consistent results add a uniform professional look to artwork in exhibitions or collections especially with larger pieces.
In a class environment an instructor providing the correct exposure time can have confidence that every students artwork will be a success.
Some user comments
Really useful app for helping time cyanotype exposures. The British weather is so changeable this app helps to get repeatable results.
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