Terms of Use

Last updated June 5, 2026

By using this site you agree to these simple terms.

Informational use only

The calculators and guides on this site are provided for general informational and educational purposes. Results are estimates. These are optical estimates and rules of thumb, not a guarantee of sharpness — circle of confusion, the 500 rule, and equivalence are simplifications, so trust your own test shots for critical work.

No warranty

We work hard to keep the formulas correct and show them openly, but the site is provided “as is,” without warranty of any kind. We are not liable for decisions made based on a result — always verify anything important before acting on it.

Affiliate links

Some outbound links may be affiliate links; see our Privacy page for details. Prices and product availability are set by the retailer, not by us.

Contact

Questions about these terms? Email corrections@cameramathcalc.com.