Terms of Use

Last updated: 2026-06-13

These terms govern your use of photocalcs.uk (the “site”). By using the site you agree to these terms. If you do not agree, please do not use the site.

1. What the site provides

The site is a free library of photography and videography calculators plus reference content — covering depth of field and hyperfocal distance, exposure and reciprocity, focal length and crop factor, print sizes and resolution, file and storage sizes, time-lapse and video settings. It is provided “as is” without account registration or payment.

2. Accuracy and your own kit

Calculators are estimates based on standard optical formulae and the focal length, aperture, sensor format and figures you enter. Real-world results depend on your specific lens and its true focal length and aperture, your sensor and chosen circle of confusion, focus accuracy, diffraction and how critically the image is viewed or enlarged. Depth-of-field and hyperfocal figures in particular are guides — always confirm critical focus on the actual scene and review your shots at full magnification.

Treat every result as a starting point, not a guarantee. Circle-of-confusion choice, viewing distance and print size all shift the numbers, so bracket focus and exposure where it matters. We round and estimate conservatively, but we cannot account for every lens, sensor or shooting situation, so verify settings against your own camera and a test frame before you rely on them.

3. Limitation of liability

To the fullest extent permitted by law, we are not liable for:

indirect, incidental, or consequential loss arising from your use of the site;
loss of profits, revenue, goodwill, business interruption, or anticipated savings;
missed shots, mis-set exposure or focus, or errors or omissions in calculator output;
out-of-date citations where formats or conventions have since changed;
third-party links and their content.

Nothing in these terms limits or excludes liability for death or personal injury caused by negligence, fraud, or any liability that cannot lawfully be excluded under English law.

4. Acceptable use

You agree not to:

scrape the site in bulk using automated tools faster than a reasonable human pace;
attempt to reverse-engineer, modify, or break the site’s services;
misrepresent the site’s content as official guidance or as an endorsement of a product;
use the site for any unlawful purpose.

5. Intellectual property

Page text, charts, UI design, calculator logic, and code are protected by copyright unless stated otherwise. You may:

view, save, and print pages for personal or internal business use;
link to the site from your own site or documents;
quote short extracts with attribution to PhotoCalcs.

You may not: republish substantial extracts, scrape at scale for training commercial AI systems, or present the site’s content as your own.

6. Privacy

See our Privacy Policy and Cookie Policy for how we handle personal data.

7. Changes to these terms

We may update these terms when the law, our services, or our practices change. The “last updated” date reflects the most recent revision.

8. Governing law

These terms are governed by the laws of England and Wales. Any dispute is subject to the exclusive jurisdiction of the courts of England and Wales.