Douglas Software

World-leading Tools for the Serious Photographer.

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Photo Calculator
Trial version
Achieve high fidelity photography with automatic formulae calculation.
Mac
Sun and Moon Calculator
Trial version
Douglas Sun and Moon: Essential Timing for Photographers
Windows
Douglas Photo Calculator
Paid
Douglas Photo Calculator provides a versatile, easy-to-use solution for amateur and professional photographers alike in English, French, German,...
iOS
Douglas Photo Calculator
Trial version
Photography Calculation Tool Made Easy
Windows